Electrochemical and in situ FTIR studies of ethanol adsorption and oxidation on gold single crystal electrodes in alkaline media

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/38759
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Title: Electrochemical and in situ FTIR studies of ethanol adsorption and oxidation on gold single crystal electrodes in alkaline media
Authors: Beyhan, Seden | Uosaki, Kohei | Feliu, Juan M. | Herrero, Enrique
Research Group/s: Electroquímica de Superficies
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica
Keywords: Ethanol electrooxidation | Gold single crystal electrode | In situ Fourier transform infrared | Alkaline media
Knowledge Area: Química Física
Issue Date: 15-Oct-2013
Publisher: Elsevier
Citation: Journal of Electroanalytical Chemistry. 2013, 707: 89-94. doi:10.1016/j.jelechem.2013.08.034
Abstract: The electrooxidation of ethanol on Au(1 1 1), Au(1 0 0), Au(1 1 0) and Au(2 1 0) single crystal electrodes as well as on Au polycrystalline electrode have been investigated in alkaline media using cyclic voltammetry (CV) and in situ Fourier transform infrared reflectance (FTIR) spectroscopy. It has been found that the catalytic activity for the electrooxidation of ethanol in the low potential region decreases in the following order: Au(1 1 0) > Au(2 1 0) > Au(1 0 0) > Au(poly) > Au(1 1 1). This suggests that the defect sites on the Au surface dominate the electrooxidation of ethanol. On the other hand, both the adsorbed OH and the potential of zero charge on the surface play an important role in the ethanol oxidation reaction. The FTIR spectroscopy measurements show that the main reaction product of ethanol oxidation reaction in the alkaline media is acetate. This result indicates that the reaction product on gold is independent of the electrode’s orientation.
URI: http://hdl.handle.net/10045/38759
ISSN: 1572-6657 (Print) | 1873-2569 (Online)
DOI: 10.1016/j.jelechem.2013.08.034
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.jelechem.2013.08.034
Appears in Collections:INV - EQSUP - Artículos de Revistas

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