Investigation of vanadium-sodium silicate glasses using XANES spectroscopy

被引：6
|
作者：
Faiz, M. [1 ]
Mekki, A.
Mun, B. S.
Hussain, Z.
机构：
[1] KFUPM, Dept Phys, Surface Sci Lab, Dhahran, Saudi Arabia
[2] Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA
来源：
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 2007年 / 154卷 / 03期
关键词：
XANES; vanadium-sodium silicate glasses; VL2,3 edges; OK edge;
D O I：
10.1016/j.elspec.2006.11.006
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
X-ray absorption near edge structure spectroscopy has been used to investigate the electronic and atomic structure of (V2O5)(x)(Na2O)(0.30)(SiO2)(0.70-x)(x < 0.1) glasses obtained by melt-quench technique. The results show no sign of metallic clustering of V atoms, but mixed oxidation states (+4 and +5) of V and strong V3d-O2p hybridization in the glasses. Detailed analysis has revealed that the glass samples contain about 15% V4+ and 85% V5+ and the ligand-field splitting is about 1.6 ev (c) 2006 Elsevier B.V. All rights reserved.
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页码：60 / 62
页数：3
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