Growth mechanism of monodispersed TiO2 fine particles by the hydrolysis of Ti(OC2H5)(4)

被引：7
|
作者：
Kim, HT
Park, H
Bae, SY
Yoo, KO
机构：
[1] Department of Chemical Engineering, Hanyang University, Seoul
来源：
KOREAN JOURNAL OF CHEMICAL ENGINEERING | 1995年 / 12卷 / 05期
关键词：
growth mechanism; monodispersed fine particles; Nielsen's chronomal analysis;
D O I：
10.1007/BF02705853
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In order to investigate the growth mechanism of TiO2, the monodispersed TiO2 fine particles were prepared by hydrolysis of Ti(OC2H5)(4) using the seed preparation method. Although it was impossible to grow TiO2 particles to more than 1 pm with conventional liquid phase reaction method, we obtained monodispersed TiO2 fine particles of up to 25 run. Nielsen's chronomal analysis and Overbeek's theory were applied to clarify the particle growth mechanism The particle growth mechanism was found out as a first-order polynuclear layer growth mechanism and the growth rate constant K mu was about 6.45X10(-6) cm/s.
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页码：516 / 522
页数：7
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