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Influence of the surface termination of boron-doped diamond electrodes on oxygen reduction in basic medium

Szunerits, S., Manesse, M., Actis, P., Marcus, B., Denuault, G., Jama, C. and Boukherroub, R. (2007) Influence of the surface termination of boron-doped diamond electrodes on oxygen reduction in basic medium Electrochemical and Solid-State Letters, 10, (7), G43-G46. (doi:10.1149/1.2733796).

Record type: Article


This paper reports on the influence of the surface termination (H-, HO-, NH2-) of boron-doped diamond (BDD) electrodes on the oxygen reduction reaction (ORR) in alkaline solution. The aminated BDD surface displays a higher oxygen reduction current density and a positive shift in the oxygen reduction potential compared to H- and HO-terminated BDD surfaces. The behavior is most likely due to a preferential adsorption of oxygen species on the NH2 termination. The ORR mechanism on the H-, HO-, and NH2-terminated BDD surfaces was investigated for the first time using electrochemiluminescence (ECL) of luminol. The results indicate that the ORR proceeds via a two-electron process on H-terminated diamond, while a four-electron pathway is observed for oxidized and aminated BDD electrodes. We further show that the ECL approach can be easily extended to investigate the ORR mechanism on different electrodes and composite materials. The influence on the surface termination on the reduction of oxygen on gold-nanoparticle-modified BDD electrodes has been studied.

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Published date: 2007
Keywords: plasma, particles, electrocatalytic reduction, gold nanoparticles, electrochemical-behavior, thin-film electrodes, acid-solution, luminol, alkaline-solution, electrochemiluminescence


Local EPrints ID: 54393
PURE UUID: 0d4d1322-5f48-4395-9efc-da0265b8cf31
ORCID for G. Denuault: ORCID iD

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Date deposited: 31 Jul 2008
Last modified: 17 Jul 2017 14:35

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Author: S. Szunerits
Author: M. Manesse
Author: P. Actis
Author: B. Marcus
Author: G. Denuault ORCID iD
Author: C. Jama
Author: R. Boukherroub

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