| 95 ℃水溶液体系中TiCl4溶胶水解法制备纯金红石纳米粉体(英) |
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| 引用本文： | 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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| 作者姓名： | 李国华 郑遗凡 马淳安 |
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| 作者单位： | 1. 浙江工业大学化学工程与材料学院纳米科学与技术工程研究中心,杭州,310014;绿色化学合成技术国家重点实验室培育基地,杭州,310014
2. 绿色化学合成技术国家重点实验室培育基地,杭州,310014 |
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| 基金项目： | 国家自然科学基金资助项目(No.20476097)，浙江省自然科学基金资助项目(No.ZD0024)。 |
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| 摘 要： | 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.
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| 关 键 词： | 纯相； 金红石； 纳米晶； 溶胶水解； 四氯化钛 |
| 文章编号： | 1001-4861(2005)08-1231-07 |
| 收稿时间： | 2004-12-20 |
| 修稿时间： | 2004-12-20 |
Fabrication of Phase-pure Rutile Nanocrystal by Sol-hydrolysis of TiCl4 in Aqueous Solution at 95 ℃ Only |
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| LI Guo-Hu,ZHENG Yi-Fan and MA Chun-An. Fabrication of Phase-pure Rutile Nanocrystal by Sol-hydrolysis of TiCl4 in Aqueous Solution at 95 ℃ Only[J]. Chinese Journal of Inorganic Chemistry, 2005, 21(8): 1231-1236 |
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| Authors: | LI Guo-Hu ZHENG Yi-Fan MA Chun-An |
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| Affiliation: | Research Center of Nano Sci. & Tech., School of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014;Breeding Base of State Key Laboratory of Green Chemistry-Synthesis Technology, Hangzhou 310014,Breeding Base of State Key Laboratory of Green Chemistry-Synthesis Technology, Hangzhou 310014 and Research Center of Nano Sci. & Tech., School of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014;Breeding Base of State Key Laboratory of Green Chemistry-Synthesis Technology, Hangzhou 310014 |
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| 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. |
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| Keywords: | phase pure rutile nanocrystal sol-hydrolysis titanium tetrachloride |
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