| Ce掺杂对TiO_2晶型转变的影响 |
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| 引用本文： | 朱振峰,张建权,李军奇,杨冬,孙洪军,郭丽英.Ce掺杂对TiO_2晶型转变的影响[J].功能材料,2010,41(2). |
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| 作者姓名： | 朱振峰 张建权 李军奇 杨冬 孙洪军 郭丽英 |
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| 作者单位： | 1. 陕西科技大学,材料科学与工程学院,陕西,西安,710021
2. 陕西科技大学,材料科学与工程学院,陕西,西安,710021;陕西科技大学,教育部轻化工助剂化学与技术重点实验室,陕西,西安,710021 |
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| 基金项目： | 国家自然科学基金资助项目(50772064);;温州科技攻关资助项目(H20070016);;陕西科技大学研究生创新基金的大力资助 |
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| 摘 要： | 以钛酸四丁酯以及六水合硝酸铈为原料,采用溶胶-凝胶法制备了纯的和Ce掺杂的TiO2粉体,研究了不同掺杂量对TiO2晶形转变产生的影响。结果表明,Ce离子的掺杂阻碍了TiO2粒子由锐钛矿型向金红石型的转变,拓宽了锐钛矿型TiO2的使用温度范围;TiO2晶粒的尺寸的变化是随着焙烧温度的升高逐渐长大,随掺杂量的增加逐渐减小。TiO2粉体粒子在锐钛矿型状态下,颗粒分散较为均匀,并且无明显团聚现象。
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| 关 键 词： | 掺杂 锐钛矿 金红石 晶型转变 晶粒尺寸 |
Effect of Ce dopant on the crystal transformation of TiO_2 |
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| ZHU Zhen-feng,ZHANG Jian-quan,LI Jun-qi,YANG Dong,SUN Hong-jun,GUO Li-ying.Effect of Ce dopant on the crystal transformation of TiO_2[J].Journal of Functional Materials,2010,41(2). |
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| Authors: | ZHU Zhen-feng ZHANG Jian-quan LI Jun-qi YANG Dong SUN Hong-jun GUO Li-ying |
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| Affiliation: | 1.School of Materials Science & Engineering;Shaanxi University of Science and Technology;Xi'an 710021;China;2.Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry;Ministry of Education;China |
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| Abstract: | With Ti(OBu)_4 and Ce(NO_3)_3·6H_2O as raw material,the pure and Ce doped TiO_2 powder were prepared by a sol-gel method.The effect of dopping amount on the crystal transformation of TiO_2 was studied.The results showed that the doped Ce hindered the process of phase transition of TiO_2 particles from anatase to rutile,and propagated the temperature ranges of anatase.The crystallites growed larger with the increasing of the calcination temperature,and the crystal size became smaller with the doping increased.TiO_2 particles were well dispersed in the state of anatase,with no agglomerates observed. |
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| Keywords: | doped anatase rutile crystal transformation crystal size |
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