Spectroscopic detection of hydrogen atom spillover from au nanoparticles supported on TiO2:: Use of conduction band electrons

被引：134

作者：

Panayotov, Dimitar A. ^{[1
]}

Yates, John T., Jr. ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Chem, Ctr Surface Sci, Pittsburgh, PA 15260 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2007年 / 111卷 / 07期

关键词：

D O I：

10.1021/jp066686k

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 spillover of atomic hydrogen from supported An particles on TiO2 has been studied. IR spectroscopy detects trapped electrons in the TiO2 lattice produced by the atomic H delivered from the An. The spillover process is one-half order in P-H2 and the activation energy for H-2 dissociation on An is 0.52 +/- 0.02 eV. It is shown that surface Ti-OH groups are not involved in donating electrons to the trap sites in TiO2.

引用

页码：2959 / 2964

页数：6

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