Effect of oxygen adsorption on the chiral Pt{531} surface

被引：19
作者：
Held, G
Jones, LB
Seddon, EA
King, DA
机构：
[1] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England
[2] Univ Liverpool, Dept Chem, Surface Sci Ctr, Liverpool, Merseyside, England
[3] Daresbury Lab, CCLRC, Warrington, Cheshire, England
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2005年 / 109卷 / 13期
关键词：
D O I：
10.1021/jp0450484
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：
The adsorption of oxygen on the chiral Pt{531} surface was studied by high-resolution X-ray photoelectron spectroscopy (HRXPS) and low energy electron diffraction (LEED). After the surface is annealed in oxygen (3 x 10(-7) mbar), three O 1s peaks are observed in XPS. One peak, at 529.5 eV, is assigned to chemisorbed oxygen; it disappears after annealing in vacuo to temperatures above 900 K. The other two peaks at 530.8 and 532.3 eV are stable up to at least 1250 K. They are associated with oxide clusters on the surface. These clusters readily react with coadsorbed carbon monoxide at temperatures between 315 and 620 K.
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收藏
页码：6159 / 6163
页数：5
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