Volume 2013 (2013), Article ID 959128, 7 pages
Cyclic Voltammetric Investigations of Thiazine Dyes on Modified Electrodes
Department of Chemistry, University of North Bengal, Raja Rammohanpur, Darjeeling 734 013, India
Received 18 December 2012; Accepted 6 January 2013
Academic Editors: R. Kizek, G.-R. Li, and A. A. Moya
Copyright © 2013 Amitabha Chakraborty et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Electrochemical behavior of five progressively alkylated thiazine dyes has been investigated at glassy carbon/montmorillonite and glassy carbon/zeolite electrodes. Quantitative characteristics, associated with the positions of peak potentials ( and ) and current ratios (), are measured with scan rates. The peak current observed in the modified electrodes is dependent on both the porosity and nature and number of sites involved in partitioning the complex into film. The values of diffusion coefficient for different dyes have been calculated from electrochemical data. It is suggested that in clay-modified electrode along with physical diffusion the process of electron hopping seems to be most likely.