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GROWTH MECHANISM OF MONODISPERSED TiO2 FINE PARTICLES BY THE HYDROLYSIS OF Ti(OC2H5)4
Korean Journal of Chemical Engineering, November 1995, 12(5), 516-522(7), 10.1007/BF02705853
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Abstract
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 ㎛ with conventional liquid phase reaction method, we obtained monodispersed TiO2 fine particles of up to 2.5㎛. 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, kp was about 6.45X10-6cm/s.
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