Mesoporous structure and phase transition of nanocrystalline TiO2

被引：88

作者：

Zhang, YH ^{[1
]}

Weidenkaff, A

Reller, A

机构：

[1] Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany

[2] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China

来源：

MATERIALS LETTERS | 2002年 / 54卷 / 5-6期

关键词：

nanoparticle; titanium dioxide; mesoporous; sol-gel;

D O I：

10.1016/S0167-577X(01)00597-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mesoporous nano crystalline titanium dioxide with narrow pore size distribution was prepared by a sol-gel technique. Butanediol mixed with tetrapropylothotitanate was used as precursors. The aging time for the synthesis has an evident influence on the phase transition of TiO2 and the nucleation process. A very fine network texture made from uniform nanoparticles was revealed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses. The mesoporous structures as-prepared titania were maintained after a heat treatment at 350 and 400degreesC for 1 h, exhibiting a significant thermal stability. Four titania crystal phases (amorphous, anatase, anatase-rutile, rutile) were observed at different calcination temperature. (C) 2002 Published by Elsevier Science B.V.

引用

页码：375 / 381

页数：7

共 15 条

[1] SYNTHESIS OF HEXAGONALLY PACKED MESOPOROUS TIO2 BY A MODIFIED SOL-GEL METHOD [J].