The preparation of nanosized anatase TiO2 powder by using TiCl4 as a precursor

被引：7
|
作者：
Zhu, YF [1 ]
Zhang, L [1 ]
Gao, C [1 ]
Yao, WQ [1 ]
Cao, LL [1 ]
机构：
[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
来源：
ACTA PHYSICO-CHIMICA SINICA | 1999年 / 15卷 / 09期
关键词：
titanium dioxide; sol-gel; TiCl4;
D O I：
10.3866/PKU.WHXB19990903
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Nanosized anatase TiO2 powder was prepared by using TiCl4 ethanol solution as a precursor. The distribution of particle size was homogeneous, and the particle size of TiO2 was about 10 nm after the precursor was calcined at 773 K for 1 h. The gelatinizing mechanism of TiCl4 in ethanol solution can be described as followings. When TiCl4 was mixed with ethanol, the former reacted with ethanol to form Ti(OCH2CH3)(4) species which during the gelatinizing, process, absorbed water from the atmosphere to form Ti(OH)(4) precursor. The formation of inorganic polymer of Ti(OH)(4) was intensified with the increase of gelatinizing time, bur the organic component: decreased. The formation of anatase TiO2 can also be promoted by the increase of gelatinizing time.
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页码：784 / 788
页数：5
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