XPS AND UPS OF PT CATALYSTS OF DIFFERENT PREPARATION

被引：30
作者：
PAAL, Z
SCHLOGL, R
机构：
[1] Fritz-Haber-Institut Der Max-Planck-Gasellschaft, Berlin, W-1000
[2] Institut Für Anorganische Chemie, Universität Frankfurt, Frankfurt-Am-Main, W-6000, Niederurseler Hang
来源：
SURFACE AND INTERFACE ANALYSIS | 1992年 / 19卷 / 1-12期
关键词：
D O I：
10.1002/sia.740190197
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 techniques of XPS and UPS measurements with Pt black catalysts as well as reasonable data processing are discussed. The surface of Pt contains carbon and oxygen impurities in amounts of 15%-20% each. The use of various sensitivity factors does not influence the conclusions drawn on purity. Oxygen 1s and C Is line fitting has been done on a self-consistent basis. Of various chemical O and C species, three-dimensional carbon islands and water and/or H2O attached to Pt sites predominate. These latter entities are well detected also by UPS. The usefulness of difference XP and UP spectra in distinguishing chemical entities is pointed out.
引用
收藏
页码：524 / 528
页数：5
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