Pt L3-edge XANES studies about the hydrogen adsorption on small Pt particles

被引：33

作者：

Asakura, K ^{[1
]}

Kubota, T

Chun, WJ

Iwasawa, Y

Ohtani, K

Fujikawa, T

机构：

[1] Univ Tokyo, Grad Sch Sci, Res Ctr Spectrochem, Bunkyo Ku, Tokyo 1130033, Japan

[2] Shimane Univ, Interdisciplinary Fac Sci & Engn, Dept Mat Sci, Matsue, Shimane 6908504, Japan

[3] Univ Tokyo, Grad Sch Sci, Dept Chem, Bunkyo Ku, Tokyo 1130033, Japan

[4] Chiba Univ, Fac Sci, Dept Chem, Chiba 2638522, Japan

来源：

JOURNAL OF SYNCHROTRON RADIATION | 1999年 / 6卷

关键词：

Pt L-3-edge XANES; hydrogen adsorption; supported Pt particles;

D O I：

10.1107/S0909049598017774

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Pt L-3-edge XANES spectra were measured on the inorganic oxide-supported Pt small particles with and without adsorbed hydrogen. A peak about 8 eV above the edge appeared in the difference spectra between the Pt samples with and without hydrogen adsorption. The peak position in difference spectra was invariant with the particle sizes, the amount of adsorbed hydrogen and coadsorbates, and kind of supports. The peak intensity was only proportional to the amount of adsorbed hydrogen. Multiple scattering calculation could reproduce the peak induced by the hydrogen adsorption and showed the peak energy was independent of the number and the adsorption site of hydrogen on Pt surface. The Pt L-3-edge XANES will be a good tool for the quantitative analysis of the adsorbed hydrogen on small metal Pt particles.

引用

页码：439 / 441

页数：3

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