硬脂酸法制备纳米TiO2及微结构控制

无机材料学报, 2001, 16(3): 550-554. doi: 10.3321/j.issn:1000-324X.2001.03.028

硬脂酸法制备纳米TiO2及微结构控制

杨娟 ^1, , 李丹 ^2, , 吴东辉 ^3, , 杨绪杰 ^4, , 陆路德 ^5, , 汪信 ^6,

1.南京理工大学材料化学实验室,

2.南京理工大学材料化学实验室,

3.南京理工大学材料化学实验室,

4.南京理工大学材料化学实验室,

5.南京理工大学材料化学实验室,

6.南京理工大学材料化学实验室,

关键词：硬脂酸法 , 纳米TiO2 , 掺杂 , 微结构

Preparation of Doped Nanocrystalline TiO2 and Microstructural Control by Stearic Acid Sol-Gel Method

采用硬脂酸法制备了不同掺杂量的TiO2纳米晶。通过FTIR、XRD和TEM等实验手段对所得纳米TiO2进行分析和表征，并对反应历程进行了初步探讨。实验结果表明，利用硬脂酸法，金红石型TiO2能在500℃获得，掺杂Na+和K+后则得到锐铁矿型TiO2，且随着掺杂量的增加，TiO2的粒径减小。

Nanocrystalline TiO2 powders doped with Na+ and K+ were prepared by stearic acid sol-gel method. The resulting nanocrystallines were characterized by FTIR, XRD and TEM. The reaction mechanism was also studied. The experimental results showed that rutile TiO2 can be obtained at 500℃ by using stearic acid sol-gel method, while anatase TiO2 were obtained from doping with Na+ and K+. As a result of doping, the crystalline size decreased with increasing the amount of dopants.

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