Preparation and characterization of structurally stable hexagonal and cubic mesoporous silica thin films

被引：15
|
作者：
Jung, JI [1 ]
Bae, JY [1 ]
Bae, BS [1 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Lab Opt Mat & Coating, Taejon 305701, South Korea
来源：
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2004年 / 31卷 / 1-3期
关键词：
mesoporous materials; sol-gel; silica thin films; spin coating; TEM;
D O I：
10.1023/B:JSST.0000047983.18386.b4
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：
Transparent mesostructured silica-surfactant composite films were prepared by spin coating on silicon wafers at room temperature. A cumulative heating procedure that evaporates excess solvents and decomposes surfactants produced structurally stable mesoporous silica films. The X-ray diffraction patterns of the films indicate that both hexagonal and cubic mesoporous silica films can be formed by varying the surfactant to silicon mole ratio. The hexagonal and cubic ordered structures of the calcined mesoporous silica films were confirmed by TEM. Compared with hexagonal mesoporous silica films, the cubic mesoporous silica films had lower refractive index and higher BET surface area.
引用
收藏
页码：179 / 183
页数：5
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