Electron Beam Induced Reduction of V2O5 Studied by Analytical Electron Microscopy

被引：0
|
作者：
D.S. Su
M. Wieske
E. Beckmann
A. Blume
G. Mestl
R. Schlögl
机构：
[1] Abteilung Anorganische Chemie,Fritz
来源：
Catalysis Letters | 2001年 / 75卷
关键词：
V; O; VO; reduction; structural change; electron irradiation; electron microscopy;
D O I：
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学科分类号：
摘要：
The reduction of V2O5 under electron irradiation was studied by means of electron energy-loss spectroscopy, electron diffraction, and high-resolution imaging. The decrease of spectral intensity of O 1s excitations indicates a preferential removal of oxygen. The observed chemical shifts of the V 2p3/2 and V 2p1/2 peaks reveal that V5+ is reduced to V2+. Electron diffraction and high-resolution imaging show a structural change from the orthorhombic V2O5 to cubic VO. The beam induced reduction is compared with thermal decomposition of V2O5.
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页码：81 / 86
页数：5
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