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.

引用

页码：81 / 86

页数：5