SURFACE STRESS EFFECTS IN CHEMICAL ACTIVATION

被引：8
|
作者：
HAHN, E
KAMPSHOFF, E
KERN, K
机构：
[1] Institut de Physique Expérimentale, Ecole Polytechnique Fédérale de Lausanne
来源：
CHEMICAL PHYSICS LETTERS | 1994年 / 223卷 / 04期
关键词：
D O I：
10.1016/0009-2614(94)00466-8
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 CO on Cu covered Pd (110) has been studied using reflection absorption infrared spectroscopy and scanning tunneling microsropy. In the submonolayer Cu coverage range the presence of Cu islands induces on uncovered Pd (110) terraces a CO configuration change. This intriguing effect is not localized at Cu island boundaries (steps) but is of mesoscopic character penetrating up to 40 angstrom onto uncovered Pd terraces. Potential origins of the substrate modification are discussed. Most likely the mesoscopic CO configuration change is caused by the buildup of stress in the Pd substrate due to the substantially strained Cu islands.
引用
收藏
页码：347 / 354
页数：8
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