'In-situ' observation of halide ion adsorption on a gold electrode using synchrotron far infrared spectroscopy

被引：23
|
作者：
Melendres, CA
Hahn, F
机构：
[1] Argonne Natl Lab, Argonne, IL 60439 USA
[2] Univ Poitiers, Electrocatalysis Grp, CNRS, UMR 6503, F-86022 Poitiers, France
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1999年 / 463卷 / 02期
关键词：
far infrared spectroscopy; anion adsorption; gold electrode; synchrotron source; adsorbed halides;
D O I：
10.1016/S0022-0728(98)00457-4
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The adsorption of chloride and bromide ions on a gold electrode in the double layer region in 0.5 M perchloric acid solution was observed 'in-situ' for the first time using the technique of synchrotron far infrared reflectance spectroscopy (SFIRS). The Au-Cl surface vibrational frequency was measured to be about 263 cm(-1) in chloride concentrations from 0.005 to 0.05 M. The Au-Br stretching mode was observed at 182 cm(-1). The SFIRS technique is a promising tool for the investigation of interfacial electrochemical structures and processes with monolayer sensitivity. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：258 / 261
页数：4
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