Nanoporous TiO2/SiO2 composite prepared by a combined sol-gel and hybrid method

被引：3

作者：

Xu, Wen-Yuan ^{[1
,2
]}

Wei, Lu-Bin ^{[1
]}

Lu, Ming-Biao ^{[2
]}

机构：

[1] China Univ Min & Technol, Coll Chem & Environm Engn, Beijing 100083, Peoples R China

[2] East China Inst Technol, Dept Appl Chem, Fuzhou 344000, Peoples R China

来源：

HIGH-PERFORMANCE CERAMICS V, PTS 1 AND 2 | 2008年 / 368-372卷

关键词：

nanocomposites; titania-silica; sol-gel; beta-cyclodextrin;

D O I：

10.4028/www.scientific.net/KEM.368-372.1497

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：

Titania-silica nanocomposites with different TiO2/SiO2 compositions have been prepared by a sol-gel and hybrid method from tetraethylorthosilicate (TEOS) and tetrabutyl titanate(TBT) and beta-Cyclodextrin as a pore-forming template. Drying and calcining of the hybrid xerogel can lead to the formation of nanoporous particles with surface areas in the range of 298-418 m(2)/g. The effect of the beta-cyclodextrin concentration, the molar ratio of TiO2/SiO2 and the calcining temperature on the phase composition and structural properties of TiO2/SiO2 composites were also investigated. The results show that an increase in beta-cyclodextrin concentration can lead to a decrease of the surface area and an increase of average pore size, which can be controlled by the amount of beta-cyclodextrin in the hybrid sol.

引用

页码：1497 / +

页数：2

共 11 条

[1]

Corriu RJP, 2000, ANGEW CHEM INT EDIT, V39, P1376, DOI 10.1002/(SICI)1521-3773(20000417)39:8<1376::AID-ANIE1376>3.0.CO

[2]

2-S

[3] Titania-silica mixed oxides .5. Effect of sol-gel and drying conditions on surface properties [J].

Dutoit, DCM ;

Gobel, U ;

Schneider, M ;

Baiker, A .

JOURNAL OF CATALYSIS, 1996, 164 (02) :433-439

[4] Titania-silica as catalysts: molecular structural characteristics and physico-chemical properties [J].

Gao, XT ;

Wachs, IE .

CATALYSIS TODAY, 1999, 51 (02) :233-254

[5] In situ template generation for zincophosphate synthesis leading to guanylurea zinc phosphate, C2H7N4O•ZnPO4, containing template-to-template N-H•••O hydrogen bonds [J].

Harrison, WTA ;

Rodgers, JA ;

Phillips, MLF ;

Nenoff, TM .

SOLID STATE SCIENCES, 2002, 4 (07) :969-972

[6] Preparation and characterization of silica-modified titanium dioxide nanoparticles by co-precipitation method [J].

Li, ZJ ;

Hou, B ;

Xu, Y ;

Wu, D ;

Sun, YH .

ACTA PHYSICO-CHIMICA SINICA, 2005, 21 (03) :229-233

[7] Spectroscopic characterization of sol-gel-derived mixed oxides [J].

Miller, JM ;

Lakshmi, LJ .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (34) :6465-6470

[8] TiO2-SiO2 mixed oxides prepared by a combined sol-gel and polymer inclusion method [J].

Pabón, E ;

Retuert, J ;

Quijada, R ;

Zarate, A .

MICROPOROUS AND MESOPOROUS MATERIALS, 2004, 67 (2-3) :195-203

[9] Porous silica derived from chitosan-containing hybrid composites [J].

Retuert, J ;

Quijada, R ;

Arias, V ;

Yazdani-Pedram, M .

JOURNAL OF MATERIALS RESEARCH, 2003, 18 (02) :487-494

[10]

Yu JG, 2000, CHEM J CHINESE U, V21, P1437

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