NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.13 [2006] >
IJCT Vol.13(3) [May 2006] >


Title: Electrochemical behaviour of some industrially important azonaphthol derivatives at glassy carbon electrode
Authors: Jayadevappa, H
Shivaraj, Y
Mahadevan, K M
Kumaraswamy, B E
Sathpathi, A K
Sherigara, B S
Keywords: Voltammetry
Azo dyes
Azonaphthol derivatives
Glassy carbon electrode
Issue Date: May-2006
Publisher: CSIR
IPC CodeC07C245/02
Abstract: Electroreduction of – N = N – and – NO2 groups of azodyes, 1-(4-nitro phenyl) -azo-2-naphthol (A), 1-(3-nitrophenyl)-azo-2-naphthol (B), 1-(2-nitrophenyl)-azo 2-naphthol (C) has been studied. The azo compound not containing - NO2 group taken for the study was 1-(2-hydroxyphenyl)-azo-2-naphthol (D). The studies were carried out in partial aqueous media containing organic co-solvents such as acetonitrile, DMF and methanol. The substituent effect on cathodic reduction potentials Epc in case of dyes A, B, C were studied and it was found to be in increasing order i.e. Epc(A) < Epc(B) < Epc(C). During electroreduction of dyes A, B, and C, two separate quasireversible peaks, one for reductive cleavage of – N = N – groups, the other one due to reduction of – NO2 group into – NH2 groups were observed. The redox process has been compared with the cyclic voltammetry of the trial compounds, 2-nitroaniline and 4-amino-3-hydroxy naphthalene-1-sulphonic acid. The other data such as effect of pH, concentration of active species, supporting electrolyte, scan rate on cathodic reduction peak potential and cathodic peak current has been determined. The process is found to be diffusion controlled.
Page(s): 269-274
ISSN: 0975-0991 (Online); 0971-457X (Print)
Source:IJCT Vol.13(3) [May 2006]

Files in This Item:

File Description SizeFormat
IJCT 13(3) 269-274.pdf181.02 kBAdobe PDFView/Open
 Current Page Visits: 703 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 606259 since 06-Feb-2009  Last updated on 21-Oct-2014Webmaster: nopr@niscair.res.in