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International Journal of Electrochemistry
Volume 2012, Article ID 596268, 7 pages
http://dx.doi.org/10.1155/2012/596268
Research Article

Theory of Square-Wave Voltammetry of Two-Electron Reduction with the Adsorption of Intermediate

Department of Marine and Environmental Research, Ruđer Bošković Institute, 10000 Zagreb, Croatia

Received 9 December 2011; Revised 13 January 2012; Accepted 13 January 2012

Academic Editor: Sheng S. Zhang

Copyright © 2012 Milivoj Lovrić and Šebojka Komorsky-Lovrić. 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.

Abstract

Thermodynamically unstable intermediate of fast and reversible two-electron electrode reaction can be stabilized by the adsorption to the electrode surface. In square-wave voltammetry of this reaction mechanism, the split response may appear if the electrode surface is not completely covered by the adsorbed intermediate. The dependence of the difference between the net peak potentials of the prepeak and postpeak on the square-wave frequency is analyzed theoretically. This relationship can be used for the estimation of adsorption constant.