Formate, an Active Intermediate for Direct Oxidation of Methanol on Pt Electrode
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- 8 March 2003
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 125 (13), 3680-3681
- https://doi.org/10.1021/ja029044t
Abstract
The electro-oxidation of methanol on a Pt thin film electrode in acidic solution has been investigated by in situ surface-enhanced IR absorption spectroscopy. A new IR peak is observed at around 1320 cm-1 when the electrode potential is more positive than 0.5 V, where the bulk oxidation of MeOH occurs. This peak has been assigned to the symmetric stretching of formate species adsorbed on the Pt electrode surface. It is the first observation of formate adsorption during the electro-oxidation of methanol on a Pt surface. A near proportional relationship between the intensity of the IR band of the formate species and MeOH electro-oxidation current is observed. A new reaction scheme via non-CO pathway with formate as the active intermediate is proposed for the methanol electro-oxidation process.Keywords
This publication has 9 references indexed in Scilit:
- Electrocatalysis of methanol oxidationElectrochimica Acta, 2002
- Surface science studies of model fuel cell electrocatalystsSurface Science Reports, 2002
- Methanol Oxidation on a Carbon-Supported Pt Fuel Cell CatalystA Kinetic and Mechanistic Study by Differential Electrochemical Mass SpectrometryThe Journal of Physical Chemistry B, 2001
- Formation of intermediates during methanol oxidation: A quantitative DEMS studyJournal of Applied Electrochemistry, 2001
- Attenuated Total Reflection−Fourier Transform Infrared Study of Methanol Oxidation on Sputtered Pt Film ElectrodeLangmuir, 2000
- Formaldehyde Yields from Methanol Electrochemical Oxidation on PlatinumThe Journal of Physical Chemistry B, 1998
- Dual Path Mechanism in Methanol Electrooxidation on a Platinum ElectrodeThe Journal of Physical Chemistry, 1995
- Electrocatalytic Oxidation of Oxygenated Aliphatic Organic Compounds at Noble Metal ElectrodesPublished by Springer Science and Business Media LLC ,1992
- The oxidation of small organic moleculesJournal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1988