Electron beam induced reduction Of V2O5 studied by analytical electron microscopy

被引：73

作者：

Su, DS ^{[1
]}

Wieske, M ^{[1
]}

Beckmann, E ^{[1
]}

Blume, A ^{[1
]}

Mestl, G ^{[1
]}

Schlögl, R ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, Abt Anorgan Chem, D-14195 Berlin, Germany

来源：

CATALYSIS LETTERS | 2001年 / 75卷 / 1-2期

关键词：

V2O5; VO; reduction; structural change; electron irradiation; electron microscopy;

D O I：

10.1023/A:1016754922933

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 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 2p(3/2) and V 2p(1/2) 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：6

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