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

页码：68 / 72

页数：5

共 17 条

[1] Morphology of porous media studied by nuclear magnetic resonance [J].