Extraction of a quantitative reaction mechanism from linear sweep voltammograms obtained on a rotating disk electrode: Part 2: application to the redoxcouple Fe3+/Fe2+

Tourwé, Els; Breugelmans, Tom; Pintelon, Rik; Hubin, Annick

doi:10.1016/J.JELECHEM.2006.12.019

Title

Extraction of a quantitative reaction mechanism from linear sweep voltammograms obtained on a rotating disk electrode: Part 2: application to the redoxcouple Fe3+/Fe2+

Author

Tourwé, Els

Breugelmans, Tom

Pintelon, Rik

Hubin, Annick

Abstract

Methodology to quantitatively determine the mass and charge transfer parameters of an electrochemical reaction that was proposed in the first part of this series of articles is used in this work for the study of the reduction of ferricyanide to ferrocyanide at a platinum electrode. A validation of the previously described method is aimed for. It is concluded that the reaction can be described by a simple electron transfer and the values of the charge transfer parameters are: alpha(ox) = 5.12E-01 +/- 8.04E-03, k(ox) = 1.43E-08 m/s +/- 2.31E-09m/s and k(red)=1.74E+00m/s:+/- 2.87E-01m/s. The diffusion coefficients are D-red=8.07E-10m(2)/s +/- 2.23E-17 m(2)/s and D-ox = 8.31E-10m(2)/s +/- 2.75E- 17 m(2)/s. (c) 2007 Elsevier B.V. All rights reserved

Language

English

Source (journal)

Journal of electroanalytical chemistry and interfacial electrochemistry. - Lausanne, 1967 - 1992

Publication

Lausanne : 2007

ISSN

0022-0728 [print]

2590-2954 [online]

DOI

10.1016/J.JELECHEM.2006.12.019

Volume/pages