摘要
By hydrolysing titanium isopropoxide in a long hydrocarbon chain surfactant-containing solution, TiO2 fine particles with a diversity of well-defined morphologies was synthesized in this study by a hydrothermal route. The structural change during the formation process was monitored by scanning electron microscopy, transmission electron microscopy and X-ray diffraction analysis. TiO2 with various morphologies such as particle, sheet, rod, tube and flower-like shape was obtained by carefully controlling the preparation conditions. The experimental results show that the pH value is crucial for shape control of the produced TiO2 because it can change the charge state of the surfactant in the solution and the adsorption potential of the surfactant on the TiO2 surface. The shape evolvement of anatase TiO2 was elucidated by quenching the reaction at different stage and the formation mechanism of different shaped TiO2 was suggested.
由在长烃的水疗院 lysing 钛 isopropoxide 锁住包含表面活化剂的答案，有多种明确的形态学的 TiO2 好粒子被一条热水的线路在这研究综合。结构的变化被扫描电子显微镜学，传播电子显微镜学和 X 光检查衍射分析在形成过程期间监视。有象粒子，表，杆，试管和象花的形状那样的各种各样的形态学的 TiO2 被小心地控制准备条件获得。因为它能在 TiO2 表面上在解决方案和表面活化剂的吸附潜力改变表面活化剂的费用状态，试验性的结果证明 pH 值为生产 TiO2 的形状控制是关键的。锐钛矿 TiO2 的形状发展被在不同舞台熄灭反应阐明，不同塑造的 TiO2 的形成机制被建议。
基金
the Natural Science Foundation of Tianjin(No.06YFJMJC05000).
