EXAFS of adsorbed species on supported Pt

被引：0

作者：

Maniguet, S ^{[1
]}

Mathew, RJ ^{[1
]}

Russell, AE ^{[1
]}

机构：

[1] Univ Southampton, Dept Chem, Southampton SO17 1BJ, Hants, England

来源：

SPECTROSCOPIC TOOLS FOR THE ANALYSIS OF ELECTROCHEMICAL SYSTEMS | 2002年 / 99卷 / 15期

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D O I：

暂无

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：

In situ EXAFS X-ray absorption fine structure (EXAFS) has previously been shown to be a particularly sensitive probe of the structure of carbon supported electrocatalysts. In this study the technique is applied to the investigation of metal-adsorbate bonding for the case of CO adsorbed on Pt electrocatalyst particles. Adsorbed CO is observed as a C neighbour at 1.85 Angstrom. Following oxidation, this contribution is replaced by an 0 neighbour at 2.00 Angstrom, accompanied by a reduction in the Pt-Pt first shell coordination number. These results demonstrate that in situ EXAFS of supported Pt electrocatalysts may be used to probe adsorbate structures.

引用

页码：61 / 67

页数：7