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Preparation of Nanometer TiO_2

Li Dacheng Zhou Dali Liu Heng Zhang Ping Zhang Yun (Institute of UFP Materials,Sichuan University (west) Chengdu 610065) Gong Jiazhu (Sichuan Lomon Titanium Industry Go,Ltd Mianzhu City 618200)  
There are many kinds of methods for preparing nanometer TiO 2.These methods may be classified into two types:gas phase method and liquid phase method.The gas phase method include the vapor phase oxidation of TiCl 4,the flame hydrolysis of TiCl 4,the phase hydrolysis of Ti(OR) 4,the laser-induced vapour-phase pyrolysis ,the thermal decomposition of Ti(OR) 4,the in-situ compaction and inert gas condernsation metheod,the evaporation-condemsation method etc.The liquid phase method include the liquid phase hydrolysis of TiCl 4,the hydrolysis method of Ti(OR) 4,the sol-gel method,the liquid phase hydrolysis of TiOSO 4,the hydrothermal synthesis method,the peptization-phase transference method,the W/O microemulsion reaction method and the supercritical fluid drying method etc.In this paper,these methods are reviewed,and several methods of them are presented in detail.
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