Synthesis of nanosized rutile TiO2 powder at low temperature

被引：73
|
作者：
Tang, ZL [1 ]
Zhang, JY [1 ]
Cheng, Z [1 ]
Zhang, ZT [1 ]
机构：
[1] Tsing Hua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2003年 / 77卷 / 02期
基金：
中国国家自然科学基金;
关键词：
titania; nano-powder; anatase; rutile;
D O I：
10.1016/S0254-0584(02)00003-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nanosized rutile TiO2 powder has been synthesized by hydrolysis of Ti(OC4H9)(4) solution at 40-50 degreesC. When the solution is neutral and basic, the hydrolysis product is a precipitate and the dried precipitate is amorphous. The rutile TiO2 cannot be obtained even when the dried precipitate is calcined at 600 degreesC. When the solution is acidic, the hydrolysis product is a sol. The ratio of Ti(OC4H9)(4) to water and HNO3 has a great effect on the formation of TiO2. For a fixed ratio of water to Ti(OC4H9)(4), the ratio of HNO3 to Ti(OC4H9)(4) should be in a reasonable range in order to obtain the rutile TiO2 by drying the gel at 40-50 degreesC. If the ratio of water to Ti(OC4H9)(4) increases, the ratio of HNO3 to Ti(OC4H9)(4) should also be increased to get rutile TiO. The mean particle size of the rutile TiO, is about 50 nm even when the dried gel is calcined at 600 degreesC. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：314 / 317
页数：4
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