Platinum colloid supported on graphite: X-ray photoelectron spectroscopy study

被引：10

作者：

Shaikhutdinov, SK ^{[1
]}

Schildenberger, M

Noeske, M

Mestl, G

机构：

[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia

[2] Univ Ulm, Abt Oberflachenchem & Katalyse, D-89069 Ulm, Germany

[3] Max Planck Gesell, Fritz Haber Inst, D-1000 Berlin, Germany

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 1999年 / 67卷 / 01期

关键词：

platinum; colloid; x-ray photoelectron spectroscopy;

D O I：

10.1007/BF02475838

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：

Two states of platinum, Pt-0 and Pt+delta, with the binding energy of the Pt(4f(7/2)) line at 71.4 +/- 0.1 and 72.2 +/- 0.3 eV, are revealed by XPS in colloidal platinum deposited onto graphite. The latter state is assigned to surface Pt atoms partially oxidized due to the interaction with water and/or oxygen-terminated sulfonate group in an organic shell. The colloid deposition is found to be temperature dependent with the apparent activation energy of similar to 40 kJ/mol.

引用

页码：129 / 135

页数：7

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