Estimation of mean size and shape of small metal particles by EXAFS

被引：330

作者：

Jentys, A ^{[1
]}

机构：

[1] Vienna Univ Technol, Inst Phys & Theoret Chem, A-1060 Vienna, Austria

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1999年 / 1卷 / 17期

关键词：

D O I：

10.1039/a904654b

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 possibility to estimate the mean size and shape of metal particles from their average coordination number, which is typically obtained from EXAFS (extended X-ray absorption fine structure) analysis, is evaluated. While the number of neighbors in the first and second coordination shell were found to be not significantly dependent on the particle shape, and thus can be used to estimate the particle size, a substantial influence of the particle shape was found to be present for the coordination numbers of higher neighboring shells. Consequently, a method using the coordination number of the first or second shell (N-1 or N-2) to estimate the average particle size and that of a higher shell (N-3 or N-4) to estimate the particle shape is presented.

引用

页码：4059 / 4063

页数：5

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