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N o v e m b e r 1 2 - 1 3 , 2 0 1 8 | R o m e , I t a l y
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Chromatography 2018 & Satellite 2018 Journal of Chemical Technology and Applications| Volume 2
&
CHROMATOGRAPHY AND SEPARATION SCIENCE
World Congress on
SATELLITE AND SPACE MISSIONS
International Conference and Exhibition on
Joint Event on
OF EXCELLENCE
IN INTERNATIONAL
MEETINGS
YEARS
Necati MENEK, J Chem Tech App 2018, Volume 2
INVESTIGATION OF ELECTROCHEMICAL
REACTION MECHANISM OF SOME
AZO DYES BY USING VOLTAMMETRIC
TECHNIQUES
Azo compounds all have the same functional group -N=N-, which is a chro-
mophore. So many kinds of them are common dyes for food, pharmaceu-
ticals beverages and textile industry as coloring agents, biomedical studies,
advanced application in organic synthesis and high technology areas as laser,
liquid crystaline displays, electro-optical devices and ink-jet printers. But they
also represent a human hazard because their degradation products including
amines are carcinogenic. Thus, it appears necessary to identify and quanti-
fy with accuracy the dyes present demonstrate the need for developing fast,
accurate and selective techniques for synthetic dyes analysis[1-4]. Modern
polarographic and voltammetric methods are particularly suitable for these
purposes because of their high sensitivity, their applicability over an unusually
wide concentration range, and their low investment and running costs. There
are a large number of articles published that are discussing various aspects of
azo compound reduction and the interest in this topic is continuing. The aim
of the majority of the investigations are studying different aspects of the elec-
trode processes or finding suitable compounds and conditions for analytical
applications involving azo compounds. The polarographic and voltammetric
experiments were carried out using a computer controlled electroanalysis sys-
tem is Metrohm 757 VA Computrace Electrochemical Analyser. A three elec-
trode combination systemwas used. This consisted of a Multi Mode Electrode
(DME, SMDE and HMDE), a Ag/AgCl reference electrode and a Pt wire auxiliary
electrode. Azo compounds with reducible or oxidizable moieties are electro-
chemically active. These substances yield faradaic current as a result of redox
process and they can be determined by direct polarographic and voltammetric
methods. Electroinactive azo compounds can be determined in the same way
after derivatization. The detailed elucidation of the reduction mechanism of
the azo compounds in a variety of experimental condition can be explained by
using different voltammetric and polarographic techniques. Electrochemical
and physicochemical properties of azo, heterocyclic azo, their derivatives and
their metal complexes have been explained by different voltammetric and po-
larographic techniques.
Biography
Necati Menek has completed his BSc in Chem-
istry-Physics Department from Ondokuz Mayıs
University in 1986 and Master degree in chemistry
from Institute of Science Ondokuz Mayıs Univer-
sity in 1988. He has completed his PhD degree in
physical chemistry area at the same university. He
was an assistant professor in 1996, association
professor in 1998 and professor doctor in 2004 at
Ondokuz Mayıs University. He has been working on
physical chemistry and electro chemistry area. He
had been a visiting-professor at McGill University
(Montreal, Canada) and Nis University (Nis, Serbia).
His research interests are electro chemistry, vol­
tammetry, electro chemical reaction mechanism,
chemical degradation, molecular spectroscopy. He
is currently a manager of Kavak Vocational College
at Samsun University and as an academic staff at
Department of chemistry science and art faculty in
Ondokuz Mayis University.
Necati MENEK
Ondokuz Mayıs University, Turkey