Synthesis and characterization of SiO -chitosan/AgNPs ... · Anjitha Satheesh a, Sreedevi Paramparambath , Elango Kandasamy * and Susithra Selvam b* a Department of Sciences, Amrita

J. Indian Chem. Soc.,

Vol. 96, January 2019, pp. 1-4

An instrument for instant identification of chromatic changes in chemical reactions

A. Deepa, S. Ananthi*, K. R. Balaji and V. Vignesh

Department of Network Systems and Information Technology, University of Madras, Chennai-600

025, India, E-mail: [email protected]

Manuscript received onl ine 27 August 2018, accepted 09 October 2018

Colour change in a chemical is an indicat ion of one of several causes. The react ion of the chemical occurs

wi th the addi t ion of another organic or inorganic substance. To moni tor a react ion as i t takes place, during

the t ransi t ion of i ts molecular st ruc tural propert ies, colour change is a useful c r i ter ion. In industr ial

manufacture of chemicals through their formation wi th many a combinat ion and technique, to arr ive at the

needed composi t ion, colour change is a very useful c r i ter ion. An inst rument that can detec t ins tant ly and

record the changes in the co lour of the react ing substance has been developed, which uses a Provotech

sensor. Using an embedded cont rol ler , and an exhaus t ive software to sense the colour, i t can report the

parameters quant i ta t ively f rom instant to ins tant; i t is a very compact and s imple one to use in the

laboratories or in product ion. The art i f ic ial ly intel l igent program can sense and report colours by names in

addi t ion to the more detai led quant i tat ive colour space parameters . The cont rol ler could a lso ini t iate ac t ion to

t ime a react ion to occur, to stop a react ion at the intended level by the sensing of the changes in hue, say

from 640 nm to 650 nm. Though a s imple and economical inst rument , i t provides useful colour value

information during the t ransi t ion phase of any react ion and reports the data to a computer in addi t ion to a

display on LCD of the hue, saturat ion and colour name, such as reddish purple .

Keywords: Provotec sensor, embedded cont rol ler, C.I .E. chromatic i ty diagram, colour space, FTIR.



Synthesis and characterization of SiO2-chitosan/AgNPs composite and its application

for catalysis

A. Saravanakumar and M. Dharmendirakumar*

Department of Applied Science and Technology, A. C. Tech Campus, Anna University, Chennai-

600 025, India, E-mail: [email protected]


In the present work , a new composi te s i lver supported chi tosan-si l ica (SiO2 /chi tosan/AgNPs) has been

synthesized and charac terized through XRD and SEM analyses. The catalyt ic ac t iv i ty of the newly

synthesized composi te was invest igated in degradat ion of malachi te green as a model react ion and the

react ion fol lowed pseudo f i rst order.

Keywords: SiO2 , chi tosan, Ag, malachi te green.



Solubility and swelling studies of polymer hybrid-nickel oxide nanocomposite

A. Suhasinia and K. P. Vinod Kumarb*

aDepartment of Chemistry, St. Xavier’s Catholic College of Engineering, Nagercoil-629 003,

Tamilnadu, India

bDepartment of Chemistry, University College of Engineering, Nagercoil-629 004, Tamilnadu, India

E-mail: nanji [email protected]


Polymer nanocomposi tes invo lve a very important c lass of organic -inorganic nanost ruc tured material which

has enormous appl icat ions in storage, conversion devices . A polymer blend is prepared wi th polyurethane

diol and polycaprolac tone wi th the ra t io of 4:1. Nickel oxide nanopart ic le of various proport ions was added to

the polymer blend to obtain a complete polymer nanocomposi te. The present work focuses the solubi l i ty and

swel l ing studies of polymer nanocomposi tes prepared.

Keywords: Polycaprolactone, polyurethane diol , nickel oxide nanopart ic le , swel l ing, solubi l i ty .


Vol. 96, January 2019, pp. 9-13

Synthesis and characterization of nanoclay doped PVC/polyester composite film

A. Mohammed Ibrahim and T. K. Shabeer*

P.G. & Research Department of Chemistry, The New College, Chennai-600 014, India

E-mail: [email protected]

Manuscript received onl ine 01 September 2018, accepted 09 October 2018

The present study deals wi th the synthesis, characterizat ion of nanoclay doped PVC/polyester composi te f i lm

formed f rom new polyes ter obtained f rom terephthaloyl chloride wi th Schi f f base diol formed by the reac t ion

of 4-aminophenol wi th 3-hydroxy-4-methoxybenzaldehyde and 4-hydroxy-3,5-dimethoxybenzaldehyde (1:1

mole rat io) in ni t rogen atmosphere. The synthesized aromatic polyesters were characterized by FT-IR and 1H

NMR, thermogravimetric analysis (TGA), di f ferent ial scanning calorimetry (DSC) and gel permeation

chromatography. The resul tant composi te was characeterized by FT-IR, SEM and TGA.

Keywords: Composi te f i lm, polyester, nanoclay.


Vol. 96, January 2019, pp. 14-18

Penetration enhancer accelerated solubilization of curcumin by poly(vinylpyrrolidone)

Anjitha Satheesha , Sreedevi Paramparambatha, Elango Kandasamya* and Susithra Selvamb*

aDepartment of Sciences, Amrita Vishwa Vidyapeetham, Coimbatore-641 112, Tamilnadu, India

E-mail: [email protected] Fax: 91-422-2656274

bDepartment of Chemistry, PSG Institute of Technology, Peelamedu, Coimbatore-641 004,

Tamilnadu, India, E-mail: [email protected] Fax: 91-422- 2592277


Curcumin (CUR), a wel l -known Indian cooking ingredient i s now an es tabl ished pharmaceut ical agent . The

medic inal qual i t ies of CUR vary f rom being a s imple ant i - inf lammatory agent to ant i -cancer and ant i -HIV

agent . Recent ly, CUR is also tr ied as a photosensi t izer in photodynamic therapy for the t reatment of cancer.

For the effect ive administ rat ion of a PS molecule, t ransdermal route of drug administ rat ion has profound

advantage and to have a better penetrat ion of the drug molecule, i t is possible to use a penet rat ion enhancer.

CUR is f luorescent in nature and owing to i ts hydrophobic i ty, dissolut ion studies wi th various drug del ivery

systems are carr ied out using f luorescence spect roscopic techniques. The solubi l izat ion of CUR is achieved

by using poly(v inylpyrrol idone) (PVP) as the drug del ivery media. To accelerate the solubi l izat ion and

transdermal penet rat ion, myr ist ic acid (MA), a fa t ty acid is used as a penet rat ion enhancer. The pre-

formulat ion s tudies of ternary system of CUR-PVP-MA show that i t is a feasible system.

Keywords: Curcumin, poly(v inylpyrrol idone), myrist ic acid, penetrat ion enhancer.


Vol. 96, January 2019, pp. 19-22

One-pot synthesis of modified 4-aryl-4H-chromenes and their preliminary anti-cancer studies

Archana D. Nair, Athira C. K., Priyadharshini Manikandan and Prasanna Ramani*

Dhanvanthri Lab, Department of Sciences, Amrita School of Engineering, Amrita Vishwa

Vidyapeetham, Coimbatore-641 112, Tamilnadu, India

E-mail: [email protected], [email protected] Fax: 91-422-2656274


The target subst i tuted chromene molecule 4a-c were prepared by s imple one-pot synthesis using subst i tuted

benzaldehyde, malononi t r i le and 3-(dimethylamino)phenol . F luoro-subst i tuted (4a ) possess high ant i -oxidant

property. The same compound shows good act iv i ty towards MCF-7 and BT-549 cel l l i ne analyses.

Keywords: 4-Aryl -4H-chromenes, one-pot synthesis, heterocycl ic molecules , ant i -oxidant, ant i -cancer.


Vol. 96, January 2019, pp. 23-24

Study of corrosion inhibition property of metal oxides for carbon steel in acidic medium by gravimetric analysis

J. Arockia Selvia*, M. Arthanareeswaria , P. Kamarajb , T. Pushpa Malinia and K. Thilakavathia

aDepartment of Chemistry, SRM Institute of Science and Technology, Kattankulathur-603 203,

Tamilnadu, India, E-mail: arockiaselvi. [email protected]

bDepartment of Chemistry, Vel Tech Rangarajan Dr. Sanguthala R&D Institute of Science and

Technology, Avadi-600 002, Tamilnadu, India


Metal oxides (MO) due to thei r basic nature have been selected as corrosion inhibi tor for carbon steel in 1 N hydrochloric acid solut ion. Metal oxide such as ZnO, NiO, Eu2O3 are used as corrosion inhibi tors and the

corrosion inhibi t ion eff ic iencies were compared. The behavior of metal oxide, MO as a corrosion inhibi tor for

carbon steel in 1 N HCl acidic medium has been inves t igated by weight loss method at room temperature. The

corrosion inhibi t ion eff ic iency (IE) increased wi th increase in concentrat ion of MO except NiO.

Keywords: Carbon s teel , metal oxides, corrosion inhibi t ion, weight loss method.


Vol. 96, January 2019, pp. 25-28

A comparative study of hydroxyapatite (Ca10(PO4)6(OH)2) using sol-gel and co-

precipitation methods for biomedical applications

B. Shalinia and A. Ruban Kumar*b

aAuxil ium College, Vellore-632 006, Tamilnadu, India

bDepartment of Physics, Centre for Crystal Growth, VIT University, Vellore-632 014, Tamilnadu,

India, E-mail: [email protected]


In this present paper, nano HAp is synthesized by sol -gel and co-precipi ta t ion method for the appl icat ion of

medical f ield. During synthesis, the di f ferent chemical precursors l ike calc ium ni t ra te tet rahydrate and

diammonium hydrogen phosphate are mixed in the rat io of 1:67 rat io and ammonia solut ion is added to

maintain the pH of 10. The synthesis of HAp powders is conf i rmed by Powder XRD, FT-IR, SEM and TEM.

The average crys tal l i te s ize for the maximum intensi ty peaks was found to be approximately 20 to 35 nm. The

FT-IR spect rum shows that there is a presence of phosphate group at 605–634 cm–1 . Part ic le s ize and

morphological s tudies were es tabl ished using SEM l ike sphere shaped, rod-shaped, agglomerated rod-shaped

morphology was observed. The chemical composi t ions are also ident i f ied using EDAX analysis. Rod-shaped

morphology was observed using TEM.

Keywords: Hydroxyapat ie , PXRD, FT-IR, SEM, TEM.


Vol. 96, January 2019, pp. 29-31

Calculation of activation energy for unsaturated polyamide using fumaric acid and 2,6-diaminopyridine by modified Higashi-Yamazaki phosphorylation method

B. Sridevi*, D. Venkatesh and M. Chitra

P.G. & Research, Department of Chemistry, Presidency College, Chennai-600 005, India



With a v iew to examine the modi f icat ion of polymer characterist ics by the int roduct ion of heterocycl ic uni ts in

the polymer backbone i t was proposed to synthesize and characterise unsaturated polyamides involv ing 2,6-

diaminiopyridine and fumaric acid. Though the synthesis o f these polyamide has been reported earl ier by

interfacial method, there is no systematic study seems to have been done to evaluate the k inet ic parameters

and biological act iv i ty . In the present paper phosphory lat ion technique was employed to prepare the

unsaturated polyamide and the resul ts compared wi th the maleic acid to show the effect of cis -t rans

isomerism in thermal studies .

Keywords: 2 ,6-Diaminiopyridine, fumaric acid, phosphoryla t ion, k inet ic parameters.


Vol. 96, January 2019, pp. 32-35

Thermal studies of unsaturated aliphatic-heterocyclic polyamides

B. Sridevi* and R. Vijayakumar




Thermal analysis provides important in formation on the temperature dependent propert ies of materials and on

thermal ly induced process (phase t ransi t ion, decomposi t ion etc . ). Thermal analysis is advantageous as i t

gives a general v iew of the thermal behavior of material under various condi t ions and requi res a smal l

amount of sample. Thermogravimetry analysis of synthesized unsaturated polymer using 2,6-

diamminopyridine and maleic acid has been carr ied out in the temperature range of 40–500ºC. The

thermogravimetric data was analysed by Murray and White , Coats and Redfern, Doyles and Freeman and

Carrol l ’s method to calculate energy of act ivat ion. Di f ferent k inet ic parameters were determined f rom

Freeman and Carrol l ’s method and reported.

Keywords: 2 ,6-Diamminopyridine, maleic acid, energy of ac t ivat ion, entropy , f ree energy.


Vol. 96, January 2019, pp. 36-37

Biological studies of unsaturated aliphatic-heterocyclic polyamides

B. Sridevi* and D. Venkatesh




Two polyamides were synthes ized by polycondensat ion using modi f ied Higashi ’s method of phosphorylat ion

from maleic and fumaric acid wi th 2,6-diaminopyridine. They were characterized by inherent v iscosi t ies and

spect ral s tudies l ike IR, UV-Vis ible spect ra. Ant imicrobial studies were studied in detai l for both the

polyamides and the resul ts compared to study the ef fec t of c is-t rans isomerism. Keywords: Cytotoxic i ty , cel l death, cel l v iabi l i ty , IC50 .


Vol. 96, January 2019, pp. 38-39

Biosynthesis of silver nanoparticles using Piper nigrum and its application in the photocatalytic degradation

D. Lathaa, S. Munusamya, A. Padmanabana, G. Gnamoorthya, S. Sampurnama , C. Arul Vasub

and V. Narayanana*

aDepartment of Inorganic Chemistry, bDepartment of Zoology, University of Madras, Guindy

Campus, Chennai-600 025, India, E-mail: [email protected]


Stable s i lver nanopart ic les (AgNPs) were synthesized f rom the leaf ext rac t of Piper nigrum . I t is a s imple and

envi ronmental ly benign method. The successful formation of AgNPs was charac terized by UV-Vis ible

spect roscopy (UV-Vis ) at 447 nm and Scanning elect ron microscope (SEM) studies showed that the

synthesized stable AgNPs was spherical in nature. The synthesized AgNPs has exhibi ted good photo

cataly t ic propert ies in the degradat ion of dye (methyl orange).

Keywords: Piper nigrum , leaf ext ract , AgNPs, photocatalyt ic degradat ion, methyl orange.


Vol. 96, January 2019, pp. 40-44

Effect of complexing agent: Comparative study of copper based ternary thin films by chemical bath deposition technique

E. Anujaa*, R. Thiruneelakandana and K. Manikandanb

aDepartment of Chemistry, University College of Engineering, Anna University, BIT Campus,

Tiruchirappall i-620 024, Tamilnadu, India, E-mail: [email protected]

bDepartment of Physics, Bharathidasan University Constituent Model Arts and Science College for

Women, Veppur-621 717, Tamilnadu, India


Thin f i lms of FeCuS2 and ZnCuS2 at vary ing complexing agents were deposi ted by chemical bath deposi t ion

method. Ul trathin ternary f i lms were grown on glass pla te and the st ruc tural , morphological and opt ical

characterist ics were analyzed using X-ray di f f rac t ion (XRD), Scanning Elect ron Microscopy (SEM) and UV-Vis ible spect roscopy techniques. X-Ray di f f ract ion (XRD) pattern of FeCuS2 and ZnCuS2 thin f i lm explains

the polycrys tal l ine nature, and also i t showed the deposi t ion of cubic phases at room temperature. The SEM

images show that the prepared f i lms show clear morphology inf luenced by the complexing agent Leishman

stain . The effect of complexing agents on the material absorbance and band gap energy of the deposi ted thin

f i lms were analysed using UV-Vis spect rometry. From these resul ts, i t is indicated that the prepared f i lms are

sui table candidate for solar ce l l appl icat ions.

Keywords: EDTA, copper i ron sulphide, copper z inc sulphide, chemical bath deposi t ion, absorbance, band gap.


Vol. 96, January 2019, pp. 45-47

Insight into nonlinear third order susceptibility measurement and optical limiting nature of 8-hydoxyquinolinium hydrogen fumarate single crystal

G. Ahilaa, G. Vinithab and G. Anbalaganc*

aDepartment of Physics, Presidency College, Chennai-600 005, India

bDivision of Physics, School of Advanced Sciences, Vellore Institute of Technology (VIT), Chennai-

600 127, India

cDepartment of Nuclear Physics, University of Madras, Chennai-600 025, India



The NLO thi rd order characterist ics for 8-hydroxyquinol inium hydrogen fumarate (8HQF) compound were

est imated by a diode pumping second harmonic CW Nd:YAG laser (532 nm) by ut i l iz ing Z-scan method. The

resul tant value wi th i ts magni tude for nonl inear re fract ive index was 8.64×10–8 cm2 W–1 , nonl inear absorpt ion

coef f ic ient was 0.08×10–4 cm W–1 and the thi rd order nonl inear suscept ibi l i ty was found to be 15.28×10–6

esu. A negat ive nonl ineari ty o f 8HQF proves i t to be a sel f de-focusing nature and this to be the reason for

exhibi t ing opt ical l imi t ing nature.

Keywords: Z-scan, sel f de-focusing, opt ical l imi t ing.


Vol. 96, January 2019, pp. 48-51

Synthesis and characterization of benzoin αααα-oxime and 2,6-pyridine dimethanol and its application of anti-corrosion behaviour

G. Kavithaa and C. Vedhib*

aDepartment of Chemistry, Rajalakshmi Institute of Technology, Kuthambakkam-600 124,

Tamilnadu, India

bDepartment of Chemistry, V.O. Chidambaram College, Thoothukudi-628 008, Tamilnadu, India

E-mail: cvedhi@rediffmail .com, [email protected] Fax: 91-461-2310275


Synthesis of benzoin α-oxime and 2,6-pyridine dimethanol through eco- fr iendly method. These synthesized

compounds are characterized by UV-Vis ible, FTIR and NMR spect ral techniques. Ant i -corrosion behaviour of

benzoin α-oxime and 2,6-pyridine dimethanol both the compounds studied wi th 2 N sulphuric acid on mi ld

steel . The ant i -corrosion behaviour o f the synthesized compounds was studied by subject ing to weight loss

measurements, polarisat ion studies and elect rochemical impedance spect ra (EIS) for the assessment o f i ts

performance. The studies were made wi th 2 N sulphuric acid as the corroding medium, but wi th the inhibi tors

concent rat ion in the range of 50–350 ppm. The resul ts revealed that the inhibi tor s tudied per form better in

the medium and func t ion by the mechanism of adsorpt ion on the metal surface.

Keywords: Mi ld steel , sulphuric acid , benzoin α-oxime, 2 ,6-pyridine dimethanol .


Vol. 96, January 2019, pp. 52-55

Physico-chemical characterization and antimicrobial efficiency of beta-cyclodextrin/ hydroxyapatite composite

G. Gowria, Jayachandran Venkatesanb , Sukumaran Anilc and P. N. Sudhaa*

aBiomaterials Research Lab, Department of Chemistry, DKM College for Women (Autonomous),

Vellore-632 001, Tamilnadu, India, E-mail: [email protected]

bYenepoya Research Center, Yenepoya (Deemed to be University), Deralakatte, Mangalore-575

018, Karnataka, India

cDepartment of Periodontics, Saveetha Dental College and Hospitals, Saveetha University,

Poonamallee High Road, Chennai-600 077, India


β -CDs are biocompatible , biodegradable and non-toxic mater ials and the cent ral empty cavi ty of CDs (host ) is

capable of loading hydrophobic molecules (guest) th rough Van der Waals force and hydrogen bonds. Because

of this unique st ructure, the physicochemical propert ies of the guest molecule, such as poor solubi l i ty ,

instabi l i ty and undesi red s ide effects can be masked. β -Cyclodextr ins (CDs) are cone-shaped α-1 ,4-l inked

macrocycl ic ol igosaccharides wi th a hydrophi l ic ex terior and a hydrophobic inner cavi ty that al low the

formation of inclusion complexes wi th hydrophobic compounds. For enhancing the biological or mechanical

propert ies of cyclodext r ins incorporat ing i t wi th other polymers l ike chi tosan, gelat in and pect in has been

widely invest igated. To boost mechanical propert ies and bioact iv i ty act iv i t ies, a number of bioact ive inorganic

minerals and hydrophi l ic biopolymers have been developed for various appl icat ions . Hydroxyapat i te (HAp) is

one of the most extensively employed calc ium phosphates owing to i ts s imi lari ty to the main mineral

const i tuent of bone t issue. The bio-adaptabi l i ty and versat i l i ty of β -CD and HAp makes them capable of

al leviat ing the undesi rable propert ies of various areas l i ke adsorpt ion, drug del ivery and bone t issue

engineering through the formation of inclusion complexes. The prepared composi te has been characterised by

using FT-IR, XRD, TGA and DSC analyt ical techniques and also the ef fec t of β -CD/HAp composi te towards

bacterial species l ike Escherichia col i , Staphylococcus aureus and Klebsiel la pneumonia and fungal species

l ike Aspergi l lus niger , Aspergi l lus f lavus and Mucor mucedo . Using characterisat ion techniques i t was

concluded that intermolecular interact ions between the two components and chemical composi t ions of the

prepared material . The enhanced ant imicrobial act iv i ty of the composi te may thus provide an opportuni t ies for

potent ial use as an al ternat ive biomaterial for bone t issue engineering appl icat ions.

Keywords: Cyclodext r ins , bioact ive mineral , hydroxyapat i te, characterisat ion, bacterial species fungal species.


Vol. 96, January 2019, pp. 56-58

Mineralogical study along the northern coast of Chennai

I. Inigo Valana, R. Sasikalaa, V. Narayananb and A. Stephena*

aDepartment of Nuclear Physics, University of Madras, Guindy Campus, Chennai-600 025, India


bDepartment of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai-600 025


Fourier Transform Inf ra-Red spectroscopy is used for ident i fy ing the minerals present in the samples

col lected f rom the northern coast of Chennai . Minerals such as Quartz , Feldspar and Hemati te were

predominant ly observed in the IR spect ra.

Keywords: Mineralogy, FTIR study, crys tal l in i ty index, c lay minerology.


Vol. 96, January 2019, pp. 59-60

Growth, structural, spectral and nonlinear optical studies on potassium hydrogen phthalate single crystals with glycine as additive

J. Venkatamuthukumara and N. Sivakumara,b*

aDepartment of Physics, School of Engineering, Saveetha University, Chennai-602 105, India

bCrystal Growth Centre, Anna University, Chennai-600 025, E-mail: [email protected]


Glycine added potassium hydrogen phthalate s ingle crys tals were grown at di f ferent glycine concent rat ions by

aqueous s low evaporat ion technique. Powder di f f rac t ion studies indicate that the crystal belongs to or thorhombic sys tem wi th space group Pca21 . The grown crystals were found to be transparent in the ent i re

v is ible region wi th a low cut off wavelength of 300 nm. The presence of second harmonic generat ion (SHG)

effect in the pure and doped KHP crystal conf i rms the nonl inear opt ical property.

Keywords: Nonl inear opt ical material , c rystal growth, FT-IR, opt ical propert ies, ref rac t ive index.


Vol. 96, January 2019, pp. 61-62

Growth, structure and spectroscopic studies of an organic optical material: 4-Aminopyridinium 4-nitrophenolate 4-nitrophenol single crystal

A. Jagadesana, N. Sivakumarb and S. Arjunana*

aDepartment of Physics, RMK Engineering College, Kavarapettai , Chennai-601 206, India


bCrystal Growth Centre, Anna University, Chennai-600 025, India


Organic nonl inear opt ical (NLO) c rystals play an important role in opt ical device fabricat ion. The use of p -

ni t ro phenol for the product ion of c rystal l ine sal t wi th aromatic base is of considerable interest for the

nonl inear opt ical appl icat ions . Single c rystals of 4-aminopyr idinium 4-ni t rophenolate 4-ni trophenol (4AP4NP)

were grown by the s low evaporat ion solu t ion growth technique. The obtained crys tals were characterized by

s ingle c rystal X-ray di f f rac t ion analysis , FT-IR and FT-Raman spect ral studies. The uni t cel l parameters and

space group of 4AP4NP crystal were est imated by s ingle c rystal X-ray di f f ract ion analysis. The presence of

func t ional groups and thei r corresponding v ibrat ions were studied through FT-IR analysis. The chemical

components present in the crystal were fur ther conf i rmed by FT-Raman spectroscopy.

Keywords: Single crys tal , solu t ion growth, FT-IR, FT-Raman.


Vol. 96, January 2019, pp. 63-64

Role of additives in an eco-friendly electroless copper deposition bath

Jayalakshmi Suseelaa*, Venkatesh Perumala and Balaramesh Palanivelub

aDepartment of Chemistry, Pachaiyappa’s College, Chennai-600 030, India

E-mail: j [email protected]

bDepartment of Chemistry, RMK Engineering College, Chennai-601 206, India


This art ic le reports the ef fect of addi t ives in an eco- fr iendly elect roless copper deposi t ion bath containing

glycerol as the complexing agent and dimethylamineborane (DMAB) as the reducing agent . The copper

methanesulphonate bath was studied by adding stabi l izers such as tolyt r iazole (TTA) and cytosine (CYS) wi th

potassium hydroxide as the pH adjus ter. The elect roless bath was opt imized by the addi t ion of 1 ppm

concent rat ion of s tabi l izers at 11.50±0.25 pH. The ef fect of s tabi l izers on plat ing bath were studied and

reported. Surface morphologies of the elect roless copper coated epoxy subst rates were inves t igated using

Scanning Elect ron Microscope (SEM) and sur face roughness by Atomic Force Microscopic (AFM) analysis.

Crys tal l i te s ize and speci f ic sur face area of copper thin f i lm were observed by X-ray di f f ract ion (XRD).

Elect rochemical charac terist ics were studied by cycl ic vol tammetry whi le the CYS does not have much ef fect .

Keywords: Glycerol , dimethylamineborane, tolyt r iazole, cytosine, crys tal l i te s ize.


Vol. 96, January 2019, pp. 65-68

Physicochemical characterization of CETP sludge

K. Kalaivani and S. V. Srinivasan

Environmental Technology Division, Central Leather Research Institute, Adayar, Chennai-600 020,



In this current study, tannery waste have been characterized and chemical ly analysed for several

appl icat ions. The present study might propose the usage of tannery waste in polymerizat ion and immobi l iz ing

the chromium present in the s ludge. The charac terizat ion studies of CETP sludge reveals the composi t ion of

heavy metal , sulphate, chlorides, pH of the s ludge, total chromium present in the s ludge, leachabi l i ty to

hexavalent chromium, physica l propert ies etc . Inst rumental method of analysis l ike FTIR, XRD, XRF, AAS,

UV-spect rophotometer analysis have been carr ied out to analyse the characterist ic propert ies of the s ludge.

FTIR anlaysis peaks conf i rms the presence of calc ium in the form of sulphate and carbonate. SEM-EDX

analysis were carr ied out to study the morphology and st ructural composi t ion of the s ludge. The resul ts of the

study revealed that the concent rat ions of metal ions in the s ludge were low, but the concentrat ions of

chloride and sulphate ions were found to be high. The concent rat ion of the chromium in the s ludge is found to

be high than the admissible l imi t wi th no further oxidat ion to hexavelent chromium. The amount of calc ium

content in the CETP sludge is found to be high and i t can add a major advantage in easy binding of CETP

sludge wi th inorganic polymers.

Keywords: CETP sludge, XRF, AAS, UV-spect rophotometer, FTIR, XRD, SEM-EDX, leachabi l i ty test.


Vol. 96, January 2019, pp. 69-72

Characterization studies of tannery sludge, flyash and GGBS

K. Kalaivani and S. V. Srinivasan*

Environmental Technology Division, Central Leather Research Institute, Adayar, Chennai-600 020,



This work focuses on charac terizat ion of CETP tannery s ludge, f lyash and GGBS and the propert ies of the

CETP tannery s ludge is compared wi th f lyash and GGBS using a variety of techniques, including Fourier

t ransform inf rared (FTIR) spect roscopy, scanning elect ron microscopy (SEM) analysis , X-Ray di f f ract ion

(XRD) and X-ray f luorescene spect roscopy. Heavy metal composi t ion in the s ludge, f lyash and GGBS is given

by XRF studies . SEM diagrams for c ross sec t ional area of the samples were taken. The mirc roscopic images

of GGBS, f lyash and tannery s ludge are found to be f laky , spherical and granular respect ively. XRD studies

proved that GGBS is amorphous due to the presence of amorphous s i l ica and alumina. The tannery s ludge

and f lyash is found to be c rystal l ine wi th minori ty of amorphous phase. In this study , Fourier Transform

Inf rared Spectrophotometry (FTIR) provides a quick and relat ively inexpensive method for ident i fy ing,

quant i fy ing and to determine the frequency of funct ional groups tannery s ludge, f lyash and GGBS. This

research quant i f ied the resemblance of the characterist ic propert ies of the f lyash GGBS and tannery s ludge.

Keywords: CETP tannery s ludge, f lyash, GGBS, XRF, SEM, XRD, FTIR analysis.


Vol. 96, January 2019, pp. 73-75

A novel method of removal of toxic lead ion from the drinking water using medicinal valued bio-adsorbents in dip-tea-bag as point-of-use application

Kathirvel Asokan and Sarangapani Muniraj*

Department of Chemistry, Ramakrishna Mission Vivekananda College (Autonomous), Mylapore,

Chennai-600 004, India, E-mail: [email protected]


Heavy metal pol lut ion occurs in various water sources due to geo accumulat ion and bioaccumulat ion. The

removal of heavy metal f rom water source part icular ly from drinking water is a chal lenging task and

expensive. In the present study a low cost and poin t -of -use method is adopted by choosing medic inal ly

valued bio-adsorbent taken in dip- tea-bag to remove lead f rom potable water and the concentrat ion of lead

ion was measured by using Atomic Absorpt ion Spect rophotometer. Al l the experiments were conducted by

taking bio-adsorbents in tea-bag and adsorpt ion study was conducted lead ion spiked real sample (TDS

around 200 ppm and pH around 7.0).

Keywords: Bio-adsorbent, drinking water, lead ion removal , dip-tea-bag.


Vol. 96, January 2019, pp. 76-77

AC conductivity and dielectric studies of PVA based solid polymer electrolyte

M. Gnana Kirana ,b , N. Krishna Jyothia*, M. Narasimha Raoc and K. Vijaya Kumard

aDepartment of Physics, K. L. E. F., Vaddeswaram, Guntur Dt.-522 502, Andhra Pradesh, India


bDepartment of Physics, Andhra University, Visakhapatnam-530 003, Andhra Pradesh, India

cDepartment of Physics, SBIT, Khammam-507 002, Telangana, India

dDepartment of Physics, Dayananda Sagar Academy of Tech. and Management, Bangalore-560

082, India


The sol id polymer elec trolyte f i lms composed of polyvinyl alcohol (PVA) wi th various concent rat ions of sodium ni t ra te (NaNO3 ) sal t have been prepared by solut ion cast ing technique. The bond st ruc ture and

amorphous nature has been conf i rmed by Fourier t ransform infrared spect roscopy (FTIR) and X-ray di f f rac t ion

(XRD) analysis respect ively . The AC conduct iv i ty values have been measured in the f requency range 42 Hz–100 KHz for the f i lms (PVA:NaNO3 = 90:10; 80:20; 70:30; 60:40). The polymer elec trolyte wi th composi t ion 30

wt% of NaNO3 shows the highest conduct iv i ty o f 2.33×10–6 S/cm. Act ivat ion energy is found to be 0.19 eV.

Keywords: PVA, NaNO3 , XRD, FTIR, conduct iv i ty .


Vol. 96, January 2019, pp. 78-80

A green synthesis, characterization of highly luminescent carbon dots from Moringa

oleifera gum application as an efficient potentiometric sensor for Hg2+ toxic metal ions

M. Muthukumarana, G. Dhinagarana, V. Narayananb , T. Rajua and K. Venkatachalama*

aDepartment of Analytical Chemistry, bDepartment of Inorganic Chemistry, University of Madras,

Guindy Campus, Chennai-600 025, India , E-mail: [email protected]


In this study, synthesis of highly luminescent carbon dots (CDs) is one of the hot research areas in the

present -day contex t C-dots synthesis f rom Moringa olei fera gum is a green materials. The C-dots synthesis

using hydrothermal method us ing 180ºC for 24 h react ion. We have synthesized highly luminescent CDs in a

green way which can be adopted for large-scale product ion of luminescent CDs. In the newly synthesized C-

dots characterizat ions including UV-Vis , FT-IR, Raman, PL and FE-SEM etc. The newly prepared CCPE was

using C-dots and potent iometric heavy toxic metal ions sensing. We have demonst rated the CDs as a

sensi t ive and select ive potent iometric sensor for the determinat ion of Hg2+ ions which is a wel l -known

envi ronmental toxic pol lu tant.

Keywords: Carbon dots (CDs), composi te carbon paste elec t rode (CCPE), potent iometer, toxic metal ions.


Vol. 96, January 2019, pp. 81-84

Synthesis of poly(2,5-dimethoxyaniline)-SnO2 nanocomposites and their structural,

optical and electrochemical properties

M. Senthilkumara,b and P. Manisankarb*

aDepartment of Chemistry, Alagappa Chettiar Government College of Engineering and

Technology, Karaikudi-630 003. Tamailnadu, India

bDepartment of Industrial Chemistry, Alagappa University, Karaikudi-630 003. Tamailnadu, India

E-mail: pms11@rediffmail .com


Nanocomposi tes have gained much importance in di f ferent f ields, commercial ly and technological ly , due to

the possibi l i t ies in tuning the propert ies. In the present work , poly (2,5-dimethoxyani l ine) / t in oxide (PDMA/SnO2 ) nanocomposi tes were synthesized in the presence of sulphuric acid solut ion by the chemical

oxidat ive polymerizat ion of 2,5-dimethoxyani l ine us ing potassium peroxodisul fa te as the oxidant . The

prepared samples were characterized by using X-ray di f f rac t ion (XRD), in frared spect roscopy (FT-IR), UV-Vis

spect roscopy and scanning elect ron microscope (SEM). The resul t reveals that prepared composi te is

crystal l ine in nature along wi th improved stabi l i ty . We report the st ruc tural and morpholog ical propert ies, and elect rochemical behaviour of PDMA/SnO2 nanocomposi te. Given the importance of the opt ical propert ies of

SnO2 , also describe the opt ica l absorbance and photoluminescence of PDMA/SnO2 nanocomposi te materials .

Keywords: Poly (2,5-dimethoxyani l ine) , SnO2 , nanocomposi te , SEM, photoluminescence.


Vol. 96, January 2019, pp. 85-89

Impact of annealing process on electrical characteristics of Ni Schottky rectifiers fabricated on p-type Si

V. Manjunatha , N. Nanda Kumar Reddyb*, K. Krishna Venic, R. Padma Suvarnac , P. Anandac

and M. V. Lakshmaiahd

aDepartment of Physics, Sri Padmavati Mahila Visvavidyalayam, Tirupati-517 501, Andhra

Pradesh, India

bDepartment of Physics, Madanapalle Institute of Technology and Science, Madanapalle-517 325,

Andhra Pradesh, India , E-mail: [email protected]

cDepartment of Physics, JNTU College of Engineering, Anantapuram-515 002, Andhra Pradesh

dDepartment of Physics, Sri Krishnadevaraya University, Anantapuram-515 003, Andhra Pradesh


In this work , the elect r ical parameters of Ni /p-Si SBDs have been invest igated using I-V and C-V techniques

as a funct ion of anneal ing temperature. The experimental analysis revealed that the SBHs of the Ni /p-Si SDs

are 0.53 eV (I -V) and 0.54 eV (Norde) for as-deposi ted, 0.56 eV (I -V) and 0.58 eV (Norde) for 300ºC, 0.58

eV (I -V) and 0.59 eV (Norde) for 400ºC, and 0.50 eV (I -V) and 0.49 eV (Norde) for 500ºC, respect ively. By

performing C-V measurements for the Ni /p-Si SBDs, the SBH values were found to be in the range 0.64–0.59 eV for the as-deposi ted and 500ºC annealed samples, respect ively. Further, interface state densi ty (NSS )

values of Ni /p-Si SD is es t imated and is not iced that the NS S values decreases up to 400ºC anneal ing

temperature and s l ight ly increases after anneal ing at 500ºC.

Keywords: Schot tky diode, ideal i ty factor , MS s tructure, Schottky barr ier height , interface state densi ty.


Vol. 96, January 2019, pp. 90-92

Synthesis, growth, vibrational, thermal and birefringence property of NLO active organic crystal: Quinolinium fumarate

J. Mohanaa and G. Anbalaganb*

aDepartment of Physics, Presidency College, Chennai-600 005, India

bDepartment of Nuclear Physics, University of Madras, Guindy Campus, Chennai-600 025, India



The slow evaporat ion method is used to grow quinol inium fumarate (QF) at room temperature. The crys tal comes under orthorhombic c rystal lographic system wi th Pca21 space group. The FT-IR study conf i rmed the

v ibrat ional groups in the c rys tal . The thermal measurement is used to analyze the thermal f i rmness of the

crystal l ine sample. The bi ref r ingence measurement is taken on s ingle c rystal (QF) by technique named

channeled spect rum.

Keywords: Crystal growth, s low evaporat ion, FT-IR analysis, thermal study, bi ref r ingence.


Vol. 96, January 2019, pp. 93-95

A detailed study on the effect of side chains of amino acids for the synthesis of zinc nanoparticles

A. Muthuvinothini and S. Stella*

Department of Chemistry & Research Centre, Sarah Tucker College (Autonomous), affi l iated to

Manonmaniam Sundaranar University, Tirunelveli-627 007, Tamilnadu, India



In the present work , a s imple one-step synthet ic method was demonst rated for the synthesis o f z inc

nanopart ic les using amino acids as reducing and s tabi l iz ing agents in aqueous medium. The formation of the

nanopart ic les was st rongly inf luenced by varying the pH of the solut ion and the st ructure of the amino acid .

The y ield and propert ies of the synthesized amino acids capped zinc nanopart ic les were compared. The

synthesized nanopart ic les were characterized by using UV-Vis and FT-IR spect ral s tudies.

Keywords: Amino acids, nanopart ic les, pH, z inc, L -cysteine.


Vol. 96, January 2019, pp. 96-99

Electrocatalytic properties of palladium modified zinc oxide nanorods (Pd-ZnO NRs): Hydrothermal preparation and characterization

K. Suresh Babua, T. Dhanasekarana, A. Padmanabana, G. Gnanamoorthya , A. Stephenb and V.

Narayanana*

aDepartment of Inorganic Chemistry, bDepartment of Nuclear Physics, University of Madras,



Among various semiconductor materials, z inc oxide (ZnO) presents i tsel f as one of the most important

semiconductor due to i ts versat i le potent ial propert ies, when modi f ied wi th pal ladium has at tracted much

attent ion for their promising appl icat ions . Nano rods (NRs) l ike structure were prepared through hydrothermal

method. As synthesized samples morphological propert ies were charac terized by X-ray di f f ract ion (XRD),

di f fuse ref lectance ul t ra-v iole t spectroscopy (DRS-UV), photo luminescence (PL), f ield emission scanning

elect ron microscope (FE-SEM), high resolut ion transmission elect ron microscope (HR-TEM) in order to

conf i rm the phase puri ty and surface morphology of the sample. Pal ladium modi f ied ZnO NRs (Pd-ZnO)

samples possess a stable morphological st ruc ture composed of rod l ike st ruc ture. The modi f ied glassy

carbon (GC) elec t rode wi th Pd-ZnO NRs shows bet ter cata lyt ic act iv i ty for the elect rochemical oxidat ion of

uric acid (UA).

Keywords: Z inc oxide nanorods, pal ladium, elect rocatalyt ic propert ies, glassy carbon.


Vol. 96, January 2019, pp. 100-102

One-dimensional TiO2 by electrochemical anodization of DC sputtered Ti films

P. Vengatesha, C. Karthik Kumara and T. S. Shyjua,b,c*

aCentre of Excellence for Energy Research, bCentre for Nanoscience and Nanotechnology,

Sathyabama Institute of Science and Technology, Chennai-600 119, India


cDepartment of Physics, Faculty of Physical and Mathematical Sciences, Post Box 160-C,

University of Concepcion, Concepcion, Chile


In the present work, we have deposi ted t i tanium (Ti ) thin f i lms on FTO subst rates by DC magnetron sput tering and subsequent ly formed nanoporous t i tanium dioxide (TiO2 ) v ia elect rochemical anodizat ion of T i f i lms. The

anodizat ion was performed at di f ferent vol tages ranging f rom 10 to 40 V in the elect rolyte (NH4F/H2O/ethylene glycol ). The nanopores wi th pore diameter of around 40–60 nm was achieved which is

deduced from the SEM analysis. The invest igated optoelec tronic propert ies indicated the high mobi l i ty wi th reasonable carr ier concent rat ion, decreased resist iv i ty and increased t ransmit tance for nanoporous TiO2 .

This paves the way for the fabricat ion of sol id sta te heterojunct ion solar cel ls using nanoporous TiO2 as

eff ic ient elec t ron t ransport ing layer. Keywords: DC sputtering, anodizat ion, nanoporous TiO2 , optoelec tronics .


Vol. 96, January 2019, pp. 103-110

Performance and stability of ethanol oxidation an alkaline-acid membraneless fuel cell

M. Priyaa and B. Muthukumaranb*

aDepartment of Chemistry, St Peter’s Insti tute of Higher Education and Research, Chennai-600


bDepartment of Chemistry, Presidency College, Chennai-600 005, India


The cont inuous f low operat ion of membraneless ethanol fue l cel l using alkal ine-acidic media is presented in

this paper. In this cel l , e thanol is used as the fuel and sodium perborate is used as an oxidant for the f i rs t

t ime in an alkal ine-acidic media. Sodium perborate generates hydrogen peroxide in aqueous medium. At room

temperature, the laminar-f low-based microf luidic membraneless fuel cel l can reach a maximum power densi ty

of 22.25 mW cm–2 wi th a fuel mixture f low rate of 0.3 mL min–1 . The developed fuel cel l features no proton

exchange membrane. The s imple planar s tructured membraneless ethanol fuel cel l presents wi th high design

f lexibi l i ty and enables easy integrat ion of the microscale fuel cel l into ac tual mic rof luidic systems and

portable power appl icat ions.

Keywords: Alkal ine-acidic media, ethanol , membraneless ethanol fuel cel l , portable power appl icat ions.


Vol. 96, January 2019, pp. 111-112

Triphala incorporated PCL nanomembrane as wound dressing material for infection control

Rajalakshmi Ramamoorthy, Swetha Andra and Murugesan Muthalagu*

Department of Texti le Technology, Anna University, Chennai-600 025, India



In this study, we have made an at tempt to incorporate tr iphala in to PCL to develop nanof iber for sustained

drug release for infect ion control . The elect rospun mat was characterized by SEM, FTIR and TGA. Further,

the nanomembrane shows broad spectrum ant imicrobial ac t iv i ty and good blood compatibi l i ty . The burst and

sustained release of drug helps to cont rol infect ion throughout the heal ing process. These resul ts obtained

shows the promising ef fec t of t r iphala PCL as wound dress ing material to control infec t ion and to enhance

wound heal ing wi th ant ioxidant property .

Keywords: Triphala, polycapro lactone, composi te , nanof ibrous mat, ant imic robial .


Vol. 96, January 2019, pp. 113-117

Studies on proton conducting polymer electrolytes based on poly(ethylene oxide)/poly(vinyl pyrrolidone) with NH4SCN

R. Sasikumara*, K. Selvakumarb , M. Ramesh Prabhub and V. Sethuramanc

aDepartment of Physical Chemistry, University of Madras, Chennai-600 025, India


bSchool of Physics, Alagappa University, Karaikudi-630 004, Tamilnadu, India

cDepartment of Chemistry, Vel Tech Multi Tech, Chennai-600 062, India


Attempted a work based on poly(ethylene oxide) (PEO) and poly(v inyl pyrrol idone) (PVP) wi th constant sal t ra t io o f NH4SCN were prepared by the solut ion cast ing technique. The ionic conduct iv i ty o f the PEO/PVP host

polymer was discussed. The d issociat ion of the ammonium sal t and the interact ion between the polymer sal t

complexes was conf i rmed by X-ray di f f ract ion analys is. Atomic force microscope is an excel lent tool to

measure the roughness fac tor, pore s ize and also two and three dimensional topographic images of the

sample. Topography s tudies have been image of the sample PS4 having maximum ionic conduct iv i ty in 3D

image. The maximum room temperature ionic conduct iv i ty was found to be 8.31×10–4 S cm–1 for the f i lm containing NH4SCN as the complexing sal t .

Keywords: Poly (ethylene oxide) (PEO), poly(v inyl pyrrol idone), ionic conduct iv i ty , polymer, interac t ion.


Vol. 96, January 2019, pp. 118-120

DNA interaction studies of oxovanadium, manganese, copper and nickel complexes

Rajeswari Kundua, Saraswathi Kothandana, A. Sheelaa*, Anushree Sureshb and Jayanthi

Abrahamb

aDepartment of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore-

632 014, Tamilnadu, India, E-mail: [email protected]

bMicrobial Biotechnology Laboratory, School of Biosciences and Technology, Vellore Institute of

Technology, Vellore-632 014, Tamilnadu, India


DNA is a molecule that carr ies most of the genet ic inst ruc t ions and in terac t ion between smal l molecules and

DNA often causes DNA damage in cancer cel ls , blocking the div is ion, resul t ing in cel l death. Towards the

same, DNA in terac t ion studies of t ransi t ion metal complexes have been explored ex tensively. Further, the

geometry of complexes can be tuned by the choosing the appropria te l igand bringing about perfect synergism

to achieve greater therapeut ic ef f icacy. In this contex t, we have synthesized and charac ter ized V IV , Mn I I , Cu I I

and Ni I I complexes using 4-(2-amino-phenyl imino)-2-methyl-4H -pyran-3-ol l igand. UV absorpt ion t i t ra t ion and

gel elec t rophoret ic study brings about the comparat ive DNA binding and c leaving abi l i ty of synthesized

complexes. Based on the resul ts, the eff icacy towards ant icancer potent ial can be ascer tained.

Keywords: Metal complexes, Schi f f base, DNA interact ion, binding constants.


Vol. 96, January 2019, pp. 121-125

Hydrazine free synthesis of Cu nanostructures: Exploring vitamin-C as environmental benign reducing agent to synthesize Cu nanowires

M. Ranjana, T. G. Satheesh Babu and D. V. Ravi Kumar*

Department of Sciences, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore-

641 112, Tamilnadu, India, E-mail: [email protected], [email protected]


Among the other syntheses procedures, Cu nanowi res synthesized using hydrazine as reducing agent and

ethylene diamine (EDA) as shape di rect ing agent are wel l establ ished for the fabricat ion of t ransparent

conduct ing elec trodes and for the large scale product ion. In this art ic le , we explore the synthesis Cu

nanowi res by above method wi thout using hydrazine, a highly toxic chemical reagent. Our invest igat ion shows

that v i tamin-C (L-ascorbic acid) can be used as eff ic ient al ternat ive to hydrazine to produce Cu nanowi res.

Varying the EDA/Cu molar ra t io resul ted Cu nanowi res and micron s ize f lower l ike dendri t ic st ructures of

copper.

Keywords: Cu nanowires, EDA, hydrazine, ascorbic acid, v i tamin-C, green procedure.


Vol. 96, January 2019, pp. 126-130

Visible light activity of sulfur doped TiO2 nanoparticles prepared by one step process

S. Arunmetha* and R. Jayavel

Crystal Growth Centre, Anna University, Chennai-600 025, India



The present research work emphasizes a new approach to prepare sul fur doped TiO2 nanopart ic les by one

step chemical process . The main in tent of this work is to reduce the demeri ts o f sul fur (S) doped TiO2

nanopart ic les preparat ion, in requis i tes of the s imple, cost ef fect ive, and mass preparat ion parameters. The physicochemical propert ies of undoped and doped TiO2 were emphasized by XRD, FTIR, UV-Vis, PL, SEM

with EDS and TEM analysis. The observed resul ts shows the smal ler crys tal l i te s ize (10–12 nm) wi th

spherical morphology of indiv idual grains based on the XRD, SEM and TEM analysis resul ts. F rom the UV-Vis ible and PL analyses, i t observed that the S doped TiO2 has been improved the UV and Vis ible absorpt ion.

The opt imized resul ts were exhibi ts sul fur doping escalat ing the photogenerated elect rons and holes during

the photocatalyt ic react ion. The obtained nanopart ic les can be ut i l ized in photovol taic dev ices as photoanode

material . Keywords: Sul fur doped TiO2 , v is ible l ight act ive, s ingle step process , photocatalyt ic .


Vol. 96, January 2019, pp. 131-132

Acetone detection at room temperature by chemical sensors based on PVDF/Al2O3

composite

S. Devikalaa*, P. Kamarajb and M. Arthanareeswaria

aDepartment of Chemistry, SRM IST, Kattankulathur-630 203, Tamilnadu, India


bDepartment of Chemistry, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and

Technology, Avadi, Chennai-600 062, India


Detect ing and measuring acetone concent rat ions in the workplace or human body are necessary for our

safety and heal th . When the concent rat ion of acetone in ai r is higher than 10,000 ppm, people may develop a

headache and fat igue. Chemical sensors play a v i tal role in detect ing the presence of hazardous and

poisonous gases in the atmosphere. In the present work, a thick f i lm of composi te was prepared by using PVDF and Al2O3 (PVDAl ). Then, the composi te’s chemical sensing behaviour for acetone vapours were tested

by measuring the resistance change of the composi te at room temperature. An increase in resistance has been observed wi th a response t ime of about ten seconds. The PVDF/Al2O3 (PVDAl) composi tes were

characterized by using PXRD, FTIR and SEM. The resul ts show that the thick f i lm of PVDAl omposi te can

func t ion as a very good gas sensor for acetone vapours . Keywords: PVDF, polymer composi te, Al2O3 , FTIR, acetone.


Vol. 96, January 2019, pp. 133-135

Corrosion resistance behavior of PVA/ZrO2 composite in 3.5% NaCl

S. Devikalaa*, P. Kamarajb and M. Arthanareeswaria

aDepartment of Chemistry, SRM IST, Kattankulathur-603 203, Tamilnadu, India


bDepartment of Chemistry, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and

Technology, Avadi, Chennai-600 062, India


Corrosion occurs on the wal ls of marine st ruc tures and leads to surface damage. The main cause of the

corrosiveness are chloride ions. Every product created from metal due to i ts low cos t and easy avai labi l i ty

mi ld steel f ind i ts role. The polymer composi tes are having mul t iple adsorpt ion s i tes for bonding wi th metal

sur face and provides higher inhibi t ion eff ic iency than the corresponding monomers. In the present work , the corrosion inhibi t ion of mi ld steel in 3.5% NaCl by PVA/ ZrO2 composi tes were studied. The composi te

samples were characterized by using XRD, FTIR and SEM. Elec t rochemical impedance spect roscopic

techniques were used to explore the enhanced corrosion resistance of composi tes . The corrosion inhibi t ion eff ic iency of PVZr composi tes were found to increase wi th increase in concent rat ion of Z rO2 .

Keywords: PVA, ZrO2 , XRD, FTIR, SEM, corrosion inhibi t ion.


Vol. 96, January 2019, pp. 136-138

Development of Mimosa pudica incorporated silk-PCL nanofibrous mat for wound healing application

S. Lakshmipriya*, N. M. Imayathamizhan, P. S. Swetha, R. Suganthi and R. Vignesh

Department of Texti le Technology, Anna University, Chennai-600 025, India



In this s tudy, e thanol ext racted Mimosa pudica was incorporated into the s i lk-PCL (Polycaprolactone)

nanof ibrous mat was prepared through elec trospinning method. Si lk-PCL polymer rat io was opt imized and i t

was found that s i lk-PCL (70:30) concent rat ion forms nanof iber . To improve ant ibac ter ial act iv i ty agains t

infec ted wound, 2 .5% of the Mimosa pudica herbal ext ract was added to s i lk-PCL solut ion and elect rospun

into nanof ibrous. These developed nanof ibers were analyzed through SEM, TGA. Further , the nanof ibrous

mat was evaluated for ant imic robial act iv i ty and concluded that the leaf ext rac t of Mimosa pudica have st rong

ant imicrobial act iv i ty against E. col i than S. aureus . Drug release study of elec t rospun mat shows the

sustained drug release of Mimosa pudica due to the presence PCL polymer on the nanof iber mat. Thus, this

study conf i rmed that the Mimosa pudica incorporated s i lk-PCL elect rospun mat can hold great promises to be

used in wound heal ing appl icat ions .

Keywords: Mimosa pudica, s i lk , polycaprolactone, elec trospinning, wound heal ing.


Vol. 96, January 2019, pp. 139-141

Synthesis, characterization of manganese(II) Schiff base complex and its electrocatalytic sensing of hydroquinone

S. Praveen Kumara,b , S. Munusamya, S. Muthamizha, T. Dhanasekarana, A. Padmanabana and

V. Narayanana*

aDepartment of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai-600 025,


bDepartment of Chemistry, Easwari Engineering Col lege, Ramapuram, Chennai-600 089, India


The Schi f f base metal complexes exhibi t excel lent catalyt ic act iv i ty in various chemical react ions. The

manganese( I I) Schi f f base complexes have good elect rochemical redox ac t iv i ty due i ts various oxidat ion

states. I t wi l l be ut i l ized as an elect rocataly t ic sensor for detect ion of hydroquinone (HQ). HQ is widely used

in several f ields, such as dye, photography, pharmaceut ica l , ant ioxidant e tc. Due to high toxic i ty to human

and low degradat ion abi l i ty in ecological sys tem HQ is considered as a serious environmental pol lutant.

Based on the envi ronmental factor i t is necessi ty to develop a s imple quant i f icat ion technique for HQ. The

Mn I I Schi f f base complex modi f ied GCE exhibi ts better electrochemical sensing abi l i ty to determine HQ at

low detect ion l imi ts wi th lower potent ial than bare GCE.

Keywords: Manganese( I I ) Schi f f base complex, hydroquinone, elect rocataly t ic sensor, elec trochemical

polymerizat ion.


Vol. 96, January 2019, pp. 142-146

Studies on structural basis of epidermal growth factor receptor target using Tunicamycin on human cancer cell line

S. Sivaranjani and C. Arulvasu*

Department of Zoology, University of Madras, Guindy Campus, Chennai-600 025, India



Cancer is the leading cause of death in both economical ly developed and developing count r ies . I t is a fatal

disease caused by an uncontrol led div is ion of abnormal cel ls in the body. These abnormal cel ls cal led

mal ignant cel ls which can invade nearby t issues can spread through bloodst ream and lymphatic sys tem to

other parts of the body. Tunicamycin is an ant ibiot ic isolated from Streptomyces lysosuperi f icus that inhibi ts

the synthesis dol ichyl -N-acety lglucosamine diphosphatase essent ial for the assembly of ol igosaccharide

chains and thei r subsequent t ransfer to aspargine residues in proteins. The epidermal growth factor receptor

(EGFR) is the cel l -surface receptor , i t ’s over expression or over ac t iv i ty has been associated wi th a number

of cancers, including breast , lung, ovarian, and anal cancers. EGFR, an N-glycosylated transmembrane

protein used to study whether inhibi t ion of N-glycosylat ion and st imulat ion of endoplasmic ret iculum (ER)

stress by Tunicamycin enhances growth inhibi t ion in cancer cel l l ine. The protein-l igand (EGFR and

Tunicamycin) and the inhibi tor is Aldose reductase. The st ruc ture predict ion was done using 3D pymol and

maestro analysis . The s tructure of the l igand is elucidated and i t was docked wi th EGFR act ive pocket s i te.

The docking score was –9.87 kcal /mol and gl iding energy was –69.17 kcal /mol . In conclusion the s tructural

detai ls and docking in terac t ion predicts that this model can be used for drug target del ivery in cancer. I t also

ant ic ipated that the f indings may provide useful in formation or c lue for designing ef fect ive drugs for the

therapeut ic t reatment o f EGFR-rela ted cancer.

Keywords: EGFR, tunicamycin, aldose reductase, docking, drug target.


Vol. 96, January 2019, pp. 147-149

Synthesis and characterization of MnTe nanoparticles and its photocatalytic activity

S. SriNandhinia, A. Padmanabanb , R. Y. Sheejaa and V. Narayananb*

aDepartment of Chemistry, Anna University, Chennai-600 025, India

bDepartment of Inorganic Chemistry, University of Madras, Chennai-600 025, India



MnTe nanopart ic les have been synthesized by hydrothermal method. The materials were characterized by X-

ray di f f ract ion, Di f fuse ref lec tance UV-Vis spectroscopy and FTIR analysis. The prepared MnTe nanopart ic les

were evaluated for the dye degradat ion of methylene blue by v is ible l ight photocatalys t.

Keywords: MnTe, methylene blue, photocatalyt ic act iv i ty .


Vol. 96, January 2019, pp. 150-152

Synthesis, spectral characterization and biological evaluation of MnII, NiII and CuII complexes with new N2S2 Schiff base ligand

S. Vigneswari, K. M. Avinash Raj and A. Jeyarajendran*

Advanced Materials Research Laboratory, Department of Chemistry, Loyola College, Chennai-600



Schi f f base l igand of isophthal idene-bis-(methylhydrazinylcarbothiamide) abbreviated as (IMHC) was

synthesized by the condensat ion react ion of isophthaldehyde and N -methylhydrazinylcarbothiamide. Metal

complexes were synthesized by using metal ions, Mn I I , Ni I I , Cu I I and the l igand, IMHC which were

characterized by UV-Vis ible, IR, and 1H NMR spectroscopy and further conf i rmed by mass analysis. The

IMHC and the metal complexes were screened for in v i t ro ant imicrobial act iv i ty against Salmonel la

typhimurium, Shigel la f lexneri and Mic rococcus leuteus by disc di f fusion method and found that Mn I I and Cu I I

complexes showed higher inhibi tory act iv i ty compared to Ni I I complex .

Keywords: Schi f f base, isophthal idene-bis -(N -methylhydrazinylcarbothiamide), biological ac t iv i ty , ant imic robial

agents , tet radendate l igand.


Vol. 96, January 2019, pp. 153-157

Controlling factors affecting the stability and rate of electroless copper plating

S. Jothilakshmia*, T. Manikanda Kumarana and S. Rekhab

aDepartment of Chemistry, Bharathiar University, Coimbatore-641 046, Tamilnadu, India


bDepartment of Chemistry, R.M.D. Engineering College, Kavaraipettai-601 206, Tamilnadu, India


The main purpose of this art i c le is to focus on the elect roless copper deposi t ion f rom EDTA bath which is

used in printed c i rcui t boards (PCB) and very large scale integrated c i rcui ts (VLSI). The effec t o f the bath

operat ing condi t ions and bath addi t ives on plat ing ra te, bath stabi l i ty and morphology of the coat ing has been

studied. I t has been found that the organic addi t ive does not stabi l ize the bath but enhances the plat ing ra te.

The addi t ives were found to modi fy the s tructure of the deposi ts wi th the product ion of smal l grain s ize,

dense and t ight ly adherent copper deposi t .

Keywords: Printed c i rcui t boards, bath addi t ives , s tabi l i ty , morphology , grain s ize.


Vol. 96, January 2019, pp. 158-160

Study the effect of silk-fibroin/nanochitosan/hyaluronic acid on adhesion, proliferation and osteoblast differentiation of bone using MC3T3-E1 cell line for tissue engineering

S. Gokila, T. Gomathi, K. Vijiyalakshmi and P. N. Sudha*

Biomaterials Research Lab, Department of Chemistry, D.K.M. College for Women, Vellore-632 001,

Tamilnadu, India, E-mail: [email protected]


Nanochi tosan/s i lk-f ibroin /hyaluronic acid (NCS/SF/HA) of ternary blend was prepared and then nanochi tosan

was chemical ly c rossl inked were geared up by the s imple ionic cross l inking method using TPP to get better

bioavai labi l i ty . Characterizat ions of the ternary blends were invest igated by thermo gravimetric analysis

(TGA) and di f ferent ial scanning calorimetry (DSC), in v i t ro s tudies were carr ied out. In v i t ro cel l cul ture study

using MC3T3-E1 cel ls has shown an enhanced cel l at tachment, prol i ferat ion, di f ferent iat ion, scaf fold porosi ty

and hydrophi l ic i ty , were further achieved by the incorporat ion of the ternary scaffolds NCS/SF/HA. The assay

studied in the cel l l ine MC3T3-E1 include LDH. In the near future, i t is most l ikely that the

NCS/SF/HA/scaf fold based systems would help to reconci le the c l inical and commercial demands in t issue

engineering.

Keywords: Si lk f ibroin , nanochi tosan, hyaluronic acid , biomaterial , cel l cul ture, in v i t ro s tud ies.


Vol. 96, January 2019, pp. 161-164

Effect of composition on electrical and humidity sensing properties of NiO:MnO2:CuO

solid mixture

Crystal Y. Wilsona and S. Manivannanb*

aDepartment of Chemistry, Anna Adharsh College for Women, Chennai-600 040, India

bP.G. & Research Department of Chemistry, Dr. Ambedkar Government Arts College, Chennai-600



The ternary sol id mix ture of t ransi t ion metal oxides [nickel( I I ), manganese( IV ) and copper( I I )] NMC were

prepared wi th di f ferent mole rat ios of their component oxides and s in tered at 850 K in the form of cyl indrical

disks. The humidi ty sensing is described by experimental resul ts on NMC. The t ransi t ion metal oxide mix tures

were subjected to dc resis tance measurement as a funct ion of relat ive humidi ty in the range of 5–98% RH, achieved by di f ferent water vapour buffers thermo s tated at room temperature. The sensi t iv i ty factor (S f =

R5% /R98%) measured at 298 K revealed that NMC-121 metal ox ide mixture has the highest humidi ty

sensi t iv i ty factor 2705. The sample having highest sensi t i v i ty factor NMC-121 is characterized by powder

XRD and FT-IR data. The same has been subjected to dc conductance measurements in the temperature

range from 318 K to 623 K and hence the act ivat ion energy is calculated. The ac t ivat ion energy value was

found to be 0.327 eV. These ternary sol id mixtures of t ransi t ion metal oxides can be used as commercial

thick f i lm humidi ty sensor because of thei r humidi ty sensing fac tors.

Keywords: Sensor, humidi ty, t ransi t ion metal oxides, dc resis tance, sensi t iv i ty .


Vol. 96, January 2019, pp. 165-167

Synthesis, characterization and visible light photocatalytic activity of PANI modified TiO2/Cu nanocomposite

S. Sampurnam, T. Dhanasekaran, A. Padmanaban, S. Munusamy, D. Latha and V. Narayanan*

Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai-600 025, India



TiO2 was synthesized by hydrolysis of tet ra ethyl ortho t i tanate at room temperature in presence of ammonia.

T iO2 /Cu was prepared by convent ional impregnat ion method. PANI modi f ied TiO2 /Cu was prepared by

chemical oxidat ive polymerizat ion method. The synthesized composi te was characterized by X-ray di f f ract ion

analysis (XRD), Fourier t ransform inf rared spect roscopy (FT-IR), Di f fuse Reflectance Ul t raviolet -Vis ible

Spectroscopy (DRS-UV-Vis) and UV-Vis ible spect roscopy. I t is found that composi te exhibi ts excel lent

photocataly t ic ac t iv i ty towards photodegradat ion of organic dye under v is ible l ight.

Keywords: Polyani l ine, t i tania, photocatalyst, nanocomposi te , organic dye.


Vol. 96, January 2019, pp. 168-170

Synthesis of polypyrrole@ZrO2/Ag nanocomposite and its photocatalytic activity in

environmental remediation

S. Sampurnam, A. Padmanaban, T. Dhanasekaran and V. Narayanan*

Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai-600 025,



ZrO2 /Ag modi f ied by polypyrrole was synthesized by chemical oxidat ive polymerizat ion method. ZrO2 was

prepared by hydrolysis of z i rconyl chloride by maintaining pH 10. ZrO2 /Ag was prepared by impregnat ion

method. The sample were conf i rmed using various characterizat ion techniques such as X-ray di f f ract ion

analysis (XRD), Fourier t ransform inf rared spect roscopy (FT-IR), Di f fuse Reflectance Ul t raviolet -Vis ible

Spectroscopy (DRS-UV-Vis) , HR-SEM and UV-Visble spect roscopy. I t is found that composi te shows

enhanced photocatalyt ic act iv i ty towards photodegradat ion of methylene blue (MB) dye under v is ible l ight.

Keywords: Photocatalyst , polypyrrole, z i rconia, s i lver, nanocomposi te.


Vol. 96, January 2019, pp. 171-175

Trace level determination of t-butyl alcohol and t-butyl chloride by GC in dolasetron mesylate

K. Samuel Barnabasa , N. Balajib , S. Niranjania , M. Muthukumarana, V. Sivakumarc , T. Rajua

and K. Venkatachalama*

aDepartment of Analytical Chemistry, University of Madras, Guindy Campus, Chennai-600 025,


bDepartment of Chemistry, St. Peter’s University, Avadi, Chennai-600 054, India

cDepartment of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai-600 025


We herein report the t race level determinat ion of t -buty l a lcohol and t -buty l chloride by GC of dolaset ron

mesylate using a DB-502 column. This method was developed based on an oven programming approach using

a ni trogen gas as the mobi le phase. The detec t ion l imi t for the t -buty l alcohol and t -buty l chloride using our

developed method was 1.5 ppm. The quant i f icat ion l imi t for the t -buty l alcohol and t-buty l chloride using our

developed method was 4.5 ppm respect ively. Our method is also compatible wi th the GC-MS (mass

spect rometry) technique using hel ium gas mobi le phase ins tead of ni t rogen gas. The successful separat ion of

t -buty l alcohol and t -buty l chloride were conf i rmed by determinat ion of thei r corresponding speci f ic molecular

masses. We expect that our method wi l l be appl icable for the t race level determinat ion of t -buty l alcohol and

t-buty l chloride during the control of manufacturing processes, and for use in rapid analysis for qual i ty cont rol

in the pharmaceut ical indust ry. F inal ly , this method was val idated according to the In ternat ional Counci l on

Harmonizat ion Val idat ion Guidel ines Q2 (R1).

Keywords: GC, DB-502, t -buty l alcohol , t -buty l chloride, GC-MS.


Vol. 96, January 2019, pp. 176-179

Antimicrobial characterization of silver nanoparticle-coated polyvinyl alcohol/nanochitosan surface by “touch test” method

K. Sangeetha and P. N. Sudha*

Biomaterial Research Lab, Department of Chemistry, DKM College for Women (Autonomous),

Vellore-632 001, Tamilnadu, India, E-mail: [email protected]


The object ive of the present study was to fabricate polyvinylalcohol /nanochi tosan mat through elect rospinning

technique fol lowed by impregnat ion of s i lver nanopart ic les . The s i lver impregnated mat was evaluated for

ant imicrobial act iv i ty agains t the pathogens E. col i , Staphylococcus aureus, Pseudomonas sp, for

ant ibacterial and Aspergi l lus f lavus , Aspergi l lus niger, Aspergi l lus fumigatus and Mucor sp, for ant i fungal

act iv i ty respect ively. The phys ico-chemical propert ies of the mat was characterized using advanced analyt ical

techniques such as Fourier t ransform inf rared spectroscopy (FT-IR) and X-ray di f f ract ion studies (XRD). The

prel iminary studies supported that the s i lver nanopart ic le impregnated mat exhibi ts good ant imic robial

property wi th excel lent biocompatibi l i ty which made them to plausible potent ial candidates for biomedical

appl icat ions.

Keywords: Si lver nanopart ic le , nanochi tosan, ant imicrobial e f f icacy, pathogens, c rystal l in i ty .


Vol. 96, January 2019, pp. 180-181

Facile single step preparation of carbon nanodots from chitosan by carbonization

Sheril Ann Mathewa, S. Dhanavela, Y. Sruthi Huberta, V. Narayananb and A. Stephena*

aDepartment of Nuclear Physics, bDepartment of Inorganic Chemistry,

University of Madras, Guindy Campus, Chennai-600 025, E-mail: [email protected]


Simple carbonizat ion technique was fol lowed to obtain amino funct ional ized carbon nanodots. Using chi tosan

as precursor, di f ferent methods were employed to opt imise the carbon dots. The X-ray di f f ract ion (XRD)

pat tern showed a strong carbon peak for carbonised chi tosan. Optical property of the as-prepared carbon

dots was studied by UV-Vis ible spectroscopy. The Thermo gravimetric analysis (TGA) revealed the mass

change of the carbon dots wi th respect to the temperature. The study reports the synthesis and

characterizat ion of carbon dots from chi tosan as a sui table material for mul t i func t ional appl icat ions.

Keywords: Chi tosan, amino-funct ional ized carbon dots , carbonizat ion.


Vol. 96, January 2019, pp. 182-184

Electrical and di-electrical properties of PVA:PEG:CH3COONH4

Sneha Latha Palaa, S. Naresh Varmaa*, N. Krishna Jyothib* and K. Vijaya Kumarc

aDepartment of Chemistry, bDepartment of Physics, KLEF, Vaddeswaram, Guntur Dt.-522 502,

Andhra Pradesh, India , E-mail: [email protected], [email protected]

cDepartment of Physics, Dayananda Sagar Academy of Technology and Management, Bengaluru-

560 082, India


In this present communicat ion the elec tr ical proper t ies of the new set o f sol id blend polymer elect roly te

membranes have been invest igated where the variat ion of conduct iv i ty wi th sal t concentrat ion from 10 wt% to

30 wt% has also been veri f ied. To attain these notable elect r ical propert ies a very new combinat ion of

polymeric materials v iz. polyvinyl alcohol (PVA) and polyethylene glycol (PEG) materials were considered which further been doped wi th ammonium acetate (CH3COONH4 ) in order to enhance the conduct iv i ty and

other parameters. The dielectr ic permit t iv i ty , dielect r ic loss and ac conduct iv i ty of PVA:PEG has been

observed to increase along wi th the addi t ion of ammonium acetate at the f requency range of 42 Hz–100 kHz

and the temperature range of 308–353 K. The ac conduct iv i ty σac was found to obey the power law Aωs . The

frequency exponent ial fac tor s was calculated and i t was found to be in the range between 0.432 and 0.69

which was dependent on the ammonium acetate.

Keywords: Polymer blend, ac conduct iv i ty , dc conduct iv i ty , dielec tr ic constant, dielect r ic loss.


Vol. 96, January 2019, pp. 185-186

Structural and optical properties of pulsed electrodeposited Ag-In alloy

T. Mohana Selvia, T. Sivaranjania, T. A. Revathya, V. Narayananb and A. Stephena*

aDepartment of Nuclear Physics, bDepartment of Inorganic Chemistry, University of Madras,

Guindy Campus, Chennai-600 025, India, E-mail: [email protected]


Elect rodeposi t ion produces nanopart ic les wi th cont rol led charac terist ics namely s ize, morphology and

composi t ion. Elect rodeposi ted s i lver based al loys f ind wide appl icat ion f rom cataly t ic to ant ibacterial

research due to i ts excel lent propert ies. Si lver-Indium (Ag-In) al loys were prepared by pulsed

elect rodeposi t ion technique using di f ferent complexing agents. Boric acid was used as an addi t ive for

smoother deposi t ion of the sample. The deposi t ion was found to be favoured even at lower appl ied current

densi ty o f 10 mA/cm2 . X-Ray di f f rac t ion studies (XRD) were performed to conf i rm the formation of al loy.

Thermal s tabi l i ty o f the Ag-In samples were analyzed through Thermogravimetric analysis (TGA). Ul t raviolet -

Vis ible (UV-Vis ) spect roscopy was used to charac terize the opt ical property of prepared samples .

Keywords: Pulsed elect rodeposi t ion, s i lver, indium, Ag-In al loy.


Vol. 96, January 2019, pp. 187-197

Enhanced magnetic and catalytic properties of copper substituted barium M-hexagonal ferrites synthesized from chemical co-precipitation method

T. L. Ajeesha, Ashwini Anantharaman and Mary George*

Department of Chemistry, Stella Maris College, Chennai-600 086, India



Discharge of organic chemicals in to the water bodies leads problems to both human and aquat ic l i fe. Barium

hexaferr i te is an effec t ive catalyst in the rapid degradat ion of methylene blue dye. In this regard, the present

study was focused on synthesis of copper subst i tuted barium photocatalyst by co-precipi ta t ion method and

the as-synthesized materials were calc ined at 650ºC for 8 h to form the corresponding ferr i tes . The obtained

ferr i tes were charac terized by UV-DRS, Fourier Transform Inf rared (FT-IR), Powder X-ray Di f f rac t ion (PXRD),

Transmission Elec tron Microscope (TEM), Vibrat ing Sample Magnetometer (VSM), Brunauer-Emmett -Tel ler

(BET) techniques to s tudy the ir st ruc tural , opt ical and magnetic propert ies respect ively. The resul ts indicate

the subst i tut ion of copper in barium ferr i te nanomaterials strongly in f luences the crystal st ructure and

magnetic propert ies of the synthesized nanomaterial .

Keywords: Spinel , co-precipi ta t ion, hexagonal ferr i tes , photocataly t ic degradat ion.


Vol. 96, January 2019, pp. 198-199

Low-cost activated carbon derived from Cassia alata seeds for the removal of xylenol orange from aqueous solution: Kinetic, equilibrium, thermodynamic studies

G. Ushanandhinia, K. Arivalagana* and R. Tamilarasanb

aDepartment of Chemistry, Govt. Arts College for Men, Nandanam, Chennai-600 035, India


bDepartment of Chemistry, University College of Engineering Pattukottai, Rajamadam-614 701,

Tamilnadu, India


An inexpensive and porous ac t ivated carbon (AC) was prepared f rom Cassia ala ta (CA) matured seeds using

sulphuric acid as an ac t ivat ing agent . The prepared ac t ivated carbon was employed for the adsorpt ion of

Xylenol Orange (XO) in an aqueous solut ion. The experiments were conducted in a batch method to opt imize

various experimental parameters . The resul t ing materials were characterized by two di f ferent techniques such

as SEM and FT-IR analyses .

Keywords: Act ivated carbon, dye removal , isotherm, thermodynamic parameters .


Vol. 96, January 2019, pp. 200-202

Biosynthesis of gold nanoparticles using the flower extract of Azadirachta indica (Neem) – Characterisation and antibacterial study

V. Gopalakrishnan* and S. Muniraj

Department of Chemistry, Ramakrishna Mission Vivekananda College (Autonomous), Mylapore,

Chennai-600 004, India, E-mail: [email protected]


Gold nanopart ic les (AuNPs) were synthesized using the aqueous ex tract of neem f lower. The synthesis was

opt imized by varying the pH, temperature, ext ract volume and Au I I I concentrat ions. UV-Vis ible spectral

analysis , HRTEM and XRD were charac terist ic o f AuNps. Ant ibacterial act iv i ty of the synthesized AuNps

showed promising resul ts.

Keywords: Neem f lower, gold nanopart ic le, ant ibacterial act iv i ty .


Vol. 96, January 2019, pp. 203-206

Remediation of selected heavy metals (Pb, Cd) from fly ash using magnetite nanoparticles

Virendra Kumar Yadava* and M. H. Fulekarb

aSchool of Nanosciences, Central University of Gujarat, Gandhinagar-382 030, Gujarat, India


bSchool of Environment & Sustainable Development, Central University of Gujarat,

Gandhinagar-382 030, Gujarat, India


Magneti te nanopart ic les has immense potent ial for the envi ronmental remediat ion of inorganic contaminants

l ike heavy metals . In the present research work the commercial magneti te nanopart ic les were procured,

characterized and i t ’s ef f ic iency was analyzed for the removal of Pb and Cd f rom the aqueous solut ions of f ly

ash using shake f lask method in an incubator shaker at room temperature. The morphological analysis was

done by microscopic techniques: SEM-EDS and HRTEM which revealed the cuboidal shaped nanopart ic les of

s ize 20–45 nm. The crys tal l in i ty and microst ructure was analyzed by the XRD, Raman and FTIR. The

magneti te nanopart ic les were segregate, uni form and crys ta l l ine in nature. The SEM-EDS revealed the high

puri ty o f the sample as the EDS spect ra have peaks for Fe and O only. The 20% f ly ash solut ion have higher

Pb and Cd heavy metal concent rat ion than others . Magneti te nanopart ic les removed Pb upto 95.32% af ter 18

h and Cr was removed upto 81.52% af ter 24 h.

Keywords: Magneti te nanopart ic les, f ly ash, heavy metal , remediat ion, adsorpt ion.


Vol. 96, January 2019, pp. 207-208

Visible light driven photocatalytic activity of copper sulfide nanoparticles

Y. Sruthi Huberta, Sheril Ann Mathewa, S. Dhanavela, V. Narayananb and A. Stephena*

aDepartment of Nuclear Physics, bDepartment of Inorganic Chemistry, University of Madras,



CuS nanopart ic les are unique among copper based nanocomposi tes owing to i ts numerous appl icat ions such

as sensing, imaging, photothermal abalat ion, supercapaci tors , solar cel l , drug del ivery etc. In this report ,

s imple thermal assisted synthesis of CuS nanopart ic les was at tempted. The material was analyzed for i ts

structural property f rom XRD analysis and opt imized to y ield s ingle phase of CuS semiconductor . Opt ical

property o f as-synthesized CuS semiconductor was s tudied using UV-Vis spect roscopy and band gap was

calcula ted. The photocatalyt ic act iv i ty of the CuS was s tudied using c rys tal v iolet as model pol lutant .

Keywords: Semiconductor , photocatalysis, CuS.


Vol. 96, January 2019, pp. 209-214

Development of new aliphatic biocompatible polymers from PEG 400 for their applications

B. Yaminia* and R. Nanthinib

aDepartment of Chemistry, Saveetha Engineering College, Chennai-602 105, India


bDepartment of Chemistry, Pachaiyappa’s College, Chennai-600 030, India


This paper describes about novel al iphat ic biocompatible polymers prepared from polyethyleneglycol (PEG

400) moiet ies by mel t condensat ion of 1,12-decanediol , 1,10-decanediol , 1,8-octanediol and dodecanedioic

acid. The st ructural elucidat ion and i ts propert ies of the po lymers obtained were thoroughly inves t igated by

various techniques such as d i f ferent ial scanning calorimetry (DSC), thermogravimetric analysis (TGA), and

nuclear magnetic resonance (NMR). The polycondensat ion react ion was carr ied by the presence of

t i tanium( IV ) isopropoxide as catalys t. Also these polymers were charac terized by IR spect roscopy. The

inherent v iscosi t ies and the solubi l i t ies of the synthesized copolymers were analysed wi th thei r

corresponding resul ts .

Keywords: Polycondensat ion, PEG 400, solubi l i ty , v iscosi ty.

Documents

Synthesis and characterization of SiO -chitosan/AgNPs ... · Anjitha Satheesh a, Sreedevi Paramparambath , Elango Kandasamy * and Susithra Selvam b* a Department of Sciences, Amrita