Preparation and characterization of nanosized TiO2 powders from aqueous TiCl4 solution

被引：110

作者：

Zhang, QH ^{[1
]}

Gao, L ^{[1
]}

Guo, JK ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

NANOSTRUCTURED MATERIALS | 1999年 / 11卷 / 08期

关键词：

D O I：

10.1016/S0965-9773(99)00421-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A solution-based processing method has been used to synthesize nanocrystalline TiO2 powders by controlling the hydrolysis of TiCl4 in aqueous solution. As-prepared powder was characterized by TEM, HREM, XRD, BET and ED techniques. In the presence of a small amount sulphate ions, the powder was purl anatase and its primary particle size is finer than that of alkoxide-derived powder, moreover the transformation of anatase to rutile was retarded. Both hydrolysis temperature and amount of sulfate ions had effects on the morphology and crystallization of the powder. In an optimum process, TiO2 powder in the anatase phase was fabricated without calcination and its primary size was 4nm. BET surface area was 290m(2)/g. (C) 2000 Acta Metallurgica Inc.

引用

页码：1293 / 1300

页数：8

共 18 条

[1] DOPANTS IN VAPOR-PHASE SYNTHESIS OF TITANIA POWDERS [J].