OH-dependence of ultraviolet emission in porous silica

被引：26
|
作者：
Anedda, A
Carbonaro, CM
Clemente, F [1 ]
Corpino, R
Grandi, S
Mustarelli, P
Magistris, A
机构：
[1] Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, Ca, Italy
[2] INFM UdR Cagliari, I-09042 Monserrato, Ca, Italy
[3] Dept Chem Phys, I-27100 Pavia, Italy
[4] INFM, I-27100 Pavia, Italy
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2003年 / 322卷 / 1-3期
关键词：
D O I：
10.1016/S0022-3093(03)00176-5
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：
Photoluminescence and Raman measurements have been performed on sol-gel synthesized porous silica monoliths. Porous silica and polyethilenglycole/silica hybrids thermally treated at different temperatures have been analyzed. By exciting at 5.6 eV a structured photoluminescence emission centered at 3.7 eV is found in the whole set of samples. Hydration treatment of the pore surfaces increases the H-bonding interaction between silanols, inhibits the isolated silanols vibrations and changes the photoluminescence spectrum increasing the emission peaked at 3.7 eV. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：68 / 72
页数：5
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