Supramolecular templating of mesopores in phase-separating silica sol-gels incorporated with cationic surfactant

被引:36
作者
Nakanishi, K [1 ]
Sato, Y
Ruyat, Y
Hirao, K
机构
[1] Kyoto Univ, Grad Sch Engn, Dept Chem Mat, Sakyo Ku, Kyoto 6068501, Japan
[2] JST, PRESTO, Struct Ordering & Phys Properties, Kawaguchi, Japan
关键词
supramolecular template; silica; phase separation; pore size distribution; mesopores;
D O I
10.1023/A:1020767820079
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
Silica gels with hierarchical macropores and mesopores have been prepared by inducing phase separation in the alkoxide-based sol-gel system with an addition of alkyltrimethylammonium salt. Narrowly distributed mesopores were observed in the heat-treated gel samples possibly as a result of supramolecular templating of silica oligomers in the reacting solution. The ionic attractive interaction and hydrophobicity of the attached alkyl group cooperatively determined the phase separation tendency. No indication of long-range order of the mesopores was obtained.
引用
收藏
页码:567 / 570
页数:4
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