Influence of Heat-Treatment Conditions on the Optical Properties of Bismuth-Containing Composites Based on High-Silica Porous Glass

被引：5

作者：

Girsova, M. A. ^{[1
]}

Anfimova, I. N. ^{[1
]}

Kurilenko, L. N. ^{[1
]}

Dikaya, L. F. ^{[1
]}

机构：

[1] Russian Acad Sci, Grebenshchikov Inst Silicate Chem, St Petersburg 199034, Russia

来源：

GLASS PHYSICS AND CHEMISTRY | 2019年 / 45卷 / 06期

关键词：

bismuth-containing composite materials; thermal modification of porous glass; optical spectroscopy; energy dispersion spectroscopy; optical density spectra; LUMINESCENCE; IONS;

D O I：

10.1134/S1087659619060063

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Bismuth-containing composite materials are synthesized by the impregnation of matrices of thermally modified porous glass (PG) in 0.5 M aqueous solutions of bismuth nitrate followed by heat treatment. The optical density spectra of the obtained materials are studied depending on the heat treatment temperature (400-870 degrees C). When the temperature of the heat treatment is increased, the distribution of bismuth in the samples becomes more homogeneous. The heat treatment in the range of 650 to 870 degrees C leads to the degree of bismuth oxidation changing from Bi3+ to Bi2+ ions with the formation of dimers and clusters of bismuth.

引用

页码：592 / 595

页数：4

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