MECHANISM OF FORMATION OF TITANIUM-DIOXIDE ULTRAFINE PARTICLES IN REVERSE MICELLES BY HYDROLYSIS OF TITANIUM TETRABUTOXIDE

被引:84
作者
HIRAI, T
SATO, H
KOMASAWA, I
机构
[1] Department of Chemical Engineering, Faculty of Engineering Science, Osaka University, Toyonaka
关键词
D O I
10.1021/ie00024a009
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The mechanism of the formation of titanium dioxide ultrafine particles in reverse micelles by the hydrolysis of titanium tetrabutoxide (TTB) was studied, using sodium bis(2-ethylhexyl) sulfosuccinate (AOT)/isooctane as a reverse micellar solution. The effects of water, TTB, and surfactant concentrations were investigated. The particle formation process was followed by the change of UV-visible absorption spectra. The conditions for the formation of particles were studied, and the particle formation was found to be controlled by the TTB concentration and the number of micelles. A reaction scheme for the particle formation, based on the number of micelles, was proposed, which successfully explained the data for the combined stages.
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页码:3014 / 3019
页数:6
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