Jump to main content
Jump to site search

Issue 40, 2013
Previous Article Next Article

An in situ FTIR spectroscopic study of the electrochemical oxidation of ethanol at a Pb-modified polycrystalline Pt electrode immersed in aqueous KOH

Author affiliations

Abstract

A study of the mechanism of ethanol oxidation in alkaline solution on a platinum electrode modified with an irreversibly-deposited layer of lead has been carried out using in situ FTIR spectroscopy. This study provides support for the suggestion that the adsorption mechanism of ethanol is substantially modified in the presence of Pb, with a carbon-bonded intermediate being favoured leading to facile scission of the C–C bond in ethanol. We have found that the formation of carbonate takes place at potentials close to the thermodynamic value. At higher potentials, when Pb is lost to solution, the mechanism of oxidation of ethanol reverts to that found on a normal polycrystalline Pt surface, with the primary product being acetate.

Graphical abstract: An in situ FTIR spectroscopic study of the electrochemical oxidation of ethanol at a Pb-modified polycrystalline Pt electrode immersed in aqueous KOH

Back to tab navigation

Article information


Submitted
29 Jul 2013
Accepted
03 Sep 2013
First published
03 Sep 2013

Phys. Chem. Chem. Phys., 2013,15, 17268-17276
Article type
Paper

An in situ FTIR spectroscopic study of the electrochemical oxidation of ethanol at a Pb-modified polycrystalline Pt electrode immersed in aqueous KOH

P. A. Christensen, S. W. M. Jones and A. Hamnett, Phys. Chem. Chem. Phys., 2013, 15, 17268
DOI: 10.1039/C3CP53194E

Social activity

Search articles by author

Spotlight

Advertisements