| 95 ℃水溶液体系中TiCl4溶胶水解法制备纯金红石纳米粉体(英) |
| Fabrication of Phase-pure Rutile Nanocrystal by Sol-hydrolysis of TiCl4 in Aqueous Solution at 95 ℃ Only |
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| 摘要: |
| 关键词: 纯相 金红石 纳米晶 溶胶水解 四氯化钛 |
| 基金项目: |
| Abstract: Titanium dioxide (TiO2) nanoparticles of rutile phase were synthesized by hydrolysis of TiCl4 at 95 ℃ in aqueous solution. The samples as prepared and calcined at 500 ℃ were characterized by XRD, TG-DTA and TEM. The sample as prepared was of imperfect rutile structure, and its morphology was rod-like with a diameter of 10～20 nm, a length of 20～80 nm and an aspect ratio of 2～4. The structure of the sample calcined at 500 ℃ was a perfect rutile one, and its morphology was rod-like with a diameter of 15～25 nm, a length of 25～105 nm and an aspect ratio of 2～4. These results indicate that calcination temperature has a positive effect on the structure and the size of rutile nanocrystals, and has no effect on the aspect ratio of rutile nanocrystal. A model for the formation mechnism of rutile nanocrystal in aqueous solution under hydrolysis conditions has been proposed. |
| Keywords: phase pure rutile nanocrystal sol-hydrolysis titanium tetrachloride |
| 投稿时间：2004-12-20 修订日期：2005-03-28 |
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| 李国华,郑遗凡,马淳安.95 ℃水溶液体系中TiCl4溶胶水解法制备纯金红石纳米粉体(英)[J].无机化学学报,2005,21(8):1231-1236. |
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