STUDY OF SNO2 GELS BY EU(3+) FLUORESCENCE SPECTROSCOPY

被引:20
作者
RIBEIRO, SJL
HIRATSUKA, RS
MASSABNI, AMG
DAVOLOS, MR
SANTILLI, CV
PULCINELLI, SH
机构
[1] Instituto de Química de Araraquara, UNESP, CEP 14800 Araraquara, Sao Paulo
基金
巴西圣保罗研究基金会;
关键词
D O I
10.1016/S0022-3093(05)80611-8
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
Eu3+ fluorescence spectroscopy was used as a probe to study the changes in local arrangements of tin oxyhydroxide precipitate --> sol --> gel --> glass conversion. Electronic transition intensities and 5D0 excited state lifetime variations were followed during the entire process. Adsorption of Eu3+ ions on the colloid and changes of chemical interactions occurring in each step are described.
引用
收藏
页码:162 / 166
页数:5
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