X-RAY PHOTOELECTRON-SPECTROSCOPY OF SUPPORTED METAL PARTICLES

被引:24
作者
BASTL, Z
机构
[1] Czechoslovak Acad of Sciences, Prague, Czech, Czechoslovak Acad of Sciences, Prague, Czech
关键词
ALUMINA - Substrates - CARBON - Substrates - PALLADIUM AND ALLOYS - Spectroscopic Analysis - SILICA - Substrates - SPECTROSCOPY; ELECTRON; -; Applications;
D O I
10.1016/0042-207X(86)90225-3
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Small silver and palladium particles supported on carbon, alumina and silica substrates were studied by X-ray photoelectron spectroscopy. With decreasing surface coverage 3d core levels of metal shift toward higher binding energies. Comparable shifts are found for several transition and noble metals deposited on a clean carbon surface, indicating that they have their origin in the final state effects. The magnitude of the shift is considerably influenced by the substrate surface state. On Al//2O//3 and SiO//2 substrates the sign of the metal line-shift is positive for Pd but negative for Ag. This difference is interpreted as a consequence of the different nucleation and growth mechanisms of the two metals. The work is pertinent to catalysis, thin film physics, and photography.
引用
收藏
页码:447 / 448
页数:2
相关论文
共 13 条