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Feature Article

Split square‐wave voltammograms of surface redox reactions

Valentin Mirčeski

Corresponding Author

Institute of Chemistry, Faculty of Natural Sciences and Mathematics, ‘Cyril and Methodius’ University, POB 162, MAK‐91001 Skopje, Macedonia

Institute of Chemistry, Faculty of Natural Sciences and Mathematics, ‘Cyril and Methodius’ University, POB 162, MAK‐91001 Skopje, Macedonia
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Milivoj Lovrić

Center for Marine Research Zagreb, ‘Ruđer Bošković’ Institute, POB 1016, HR‐10001 Zagreb, Croatia

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First published: 25 April 2005
Cited by: 53

Abstract

A fast and simple method for the estimation of kinetic parameters of surface redox reactions, based on the splitting of their square‐wave voltammograms, is proposed. A mathematical procedure for simulation of these processes is developed. The method can be applied for the fast and chemically reversible redox reactions which are characterized by the kinetic parameter K ≥ 0.8 (K = ks/f). The standard rate constant, transfer coefficient and standard redox potential of the redox reaction of alizarine‐red S adsorbed on the mercury electrode in pH 9 medium are ks = 60 ± 10s−1, α = 0.45 ± 0.03 and E° = −0.810 ± 0.005V (vs. Ag/AgCl‐KCl).

Number of times cited: 53

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