摘要
Hydrothermal preparation experiments of TiO<sub>2</sub> microcrystallites were carried out. The formation of TiO<sub>2</sub> microcrystallites of polymorpbic forms was related to the precursor types and the basicity or acidity of reaction mediums under hydrothermal conditions. Based on the 'growth unit' model, the space lattice graphs of growth units responding to different polymorphs were established. The stable energy of growth unit was calculated for different basicity or acidity of reaction mediums. The formation of polymorphic TiO<sub>2</sub> microcrystallites under hydrothermal conditions was discussed based on the experimental results.
Hydrothermal preparation experiments of TiO2 microcrystallites were carried out. The formation of TiO2 microcrystallites of polymorphic forms was related to the precursor types and the basicity or acidity of reaction mediums under hydrothermal conditions. Based on the “growth unit” model, the space lattice graphs of growth units responding to different polymorphs were established. The stable energy of growth unit was calculated for different basicity or acidity of reaction mediums. The formation of polymorphic TiO2 microcrystallites under hydrothermal conditions was discussed based on the experimental results.
基金
Project supported by the National Natural Science Foundation of China (Grant No. 59772002).
