CHARACTERIZATION OF AN ELECTRODE ADLAYER BY IN-SITU INFRARED-SPECTROSCOPY - CYANIDE ON PT(111)

被引：30

作者：

STUHLMANN, C

机构：

[1] Institut für Physikalische, Theoretische Chemie der Universität Bonn, D-53115 Bonn

来源：

SURFACE SCIENCE | 1995年 / 335卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

CYANIDE; ELECTROCHEMICAL METHODS; INFRARED ABSORPTION SPECTROSCOPY; LOW INDEX SINGLE CRYSTAL SURFACES; METAL-ELECTROLYTE INTERFACES; PLATINUM; SURFACE STRUCTURE; VIBRATIONS OF ADSORBED MOLECULES;

D O I：

10.1016/0039-6028(95)00420-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Irreversibly adsorbed cyanide adlayers on a Pt(111) electrode in basic sodium perchlorate electrolytes were studied by infrared reflection-absorption spectroscopy. Infrared spectra obtained at saturation coverage display a single C-N stretching band around 2100 cm(-1), suggesting atop-like coordination of the cyanide. This band assignment is confirmed by a bismuth coadsorption experiment, The infrared data are correlated with scanning tunneling microscopy images of the surface and a real-space model is derived. The structure of the adlayer is (2 root 3 x 2 root 3)R30 degrees-7CN with CN molecules in atop sites, each surrounded by a hexagon of CN in near-atop sites.

引用

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页码：221 / 226

页数：6

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