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The application of fast scan cyclic voltammetry to the high speed channel electrode

Rees, NV, Klymenko, OV, Maisonhaute, E, Coles, BA and Compton, RG (2003) The application of fast scan cyclic voltammetry to the high speed channel electrode Journal of Electroanalytical Chemistry, 542. pp. 23-32.

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Abstract

The application of fast-scan cyclic voltammetry methods to the high-speed microband channel electrode (Rees et al. J. Phys. Chem. 99 (1995) 7096) is reported. Theory is presented to simulate cyclic voltammograms for a simple electron transfer under high convective flow rates within the high-speed channel. Experiments are reported for the oxidation of 9,10-diphenylanthracene (DPA) in acetonitrile solution containing 0.10 M tetrabutylammonium perchlorate (TBAP) for both 12.5 and 40 μm platinum microband electrodes using a range of scan rates from 50 to 3000 V s-1 and centre-line flow velocities from 12 to 25 m s-1. Analysis of the voltammograms yielded values for k0 and α for DPA which were measured to be 0.80±0.27 and 0.52±0.07 cm s-1, respectively. The range of applicability of this method was also investigated. Experiments are also presented using steady-state linear sweep voltammetry to obtain accurate measurements of the heterogeneous kinetic parameters for DPA at a platinum microband electrode. The measured value of k0 for DPA was found to be 0.94±0.16 cm s-1, with α = 0.53±0.02 and a formal oxidation potential of 1.40±0.01 V (vs. Ag). © 2002 Elsevier Science B.V. All rights reserved.

Item Type: Article
Authors :
NameEmailORCID
Rees, NVUNSPECIFIEDUNSPECIFIED
Klymenko, OVo.klymenko@surrey.ac.ukUNSPECIFIED
Maisonhaute, EUNSPECIFIEDUNSPECIFIED
Coles, BAUNSPECIFIEDUNSPECIFIED
Compton, RGUNSPECIFIEDUNSPECIFIED
Date : 30 January 2003
Identification Number : 10.1016/S0022-0728(02)01445-6
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:57
Last Modified : 17 May 2017 15:14
URI: http://epubs.surrey.ac.uk/id/eprint/840962

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