Synthesis and characterization of three-dimensionally ordered macroporous (3DOM) titania-silica mixed oxides

被引：0

作者：

Shen, Y ^{[1
]}

Wu, QZ ^{[1
]}

Liao, JF ^{[1
]}

Li, YG ^{[1
]}

机构：

[1] Zhongshan Univ, Sch Chem & Chem Engn, Guangzhou 510275, Peoples R China

来源：

JOURNAL OF INORGANIC MATERIALS | 2003年 / 18卷 / 02期

关键词：

titanium-silica mixed oxides; three-dimensionally ordered macroporous; polystyrene sphere; colloid crystal;

D O I：

暂无

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：

Three-Dimentionally Ordered macroporous titanium-silica mixed oxides were successfully synthesized by using polystyren sphere colloid crystal as the template and the sol of tetraethyl silicate and tetrabutoxy-titane as the filling fluid. The sol filled in the voids among spheres by capillary forces, and then transformed into gel in situ. Latex spheres were removed by calcination(<5 degrees C/min; 300 degrees C,5h; 570 degrees C, 5h). The macroporous samples show a beautiful iridescence in reflected light. SEM indicates that the pores axe about 500nm in size and arrayed periodically in a face-centered cubic (fcc) structure and connected with each other by small windows. EDS indicates that the Si/Ti molar ratio is 2.7. XRD indicates the wall of the pores is amorphous.

引用

页码：401 / 406

页数：6

共 7 条

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