In situ FTIRS studies of the electrocatalytic oxidation of ethanol on Pt alloy electrodes

被引：28

作者：

dos Anjos, D. M. ^{[1
,2
]}

Hahn, F. ^{[2
]}

Leger, J. -M. ^{[2
]}

Kokoh, K. B. ^{[2
]}

Tremiliosi-Filho, G. ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[2] Univ Poitiers, CNRS, UMR 6503, F-86022 Poitiers, France

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2007年 / 11卷 / 11期

关键词：

ethanol electrooxidation; Pt-Os; Pt-Ru-Os; infrared reflectance spectroscopy;

D O I：

10.1007/s10008-007-0360-y

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Ethanol oxidation on Pt-Os and Pt-Ru-Os alloy electrodes was investigated by electrochemical and spectroe lectrochemical techniques. Cyclic voltammetry and chronoamperometric results showed that the Pt-Os alloy has the highest current density at lower potentials. Linear COads, acetic acid, acetaldehyde, and CO2 were identified as reaction intermediates and/or products by single potential alteration infrared reflectance spectroscopy and subtractively normalized interfacial Fourier transform infrared reflectance spectroscopy techniques. The in situ Fourier transform infrared spectroscopy results showed that the electrooxidative adsorption of ethanol was dissociative providing COads at low potentials.

引用

页码：1567 / 1573

页数：7

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