| 稀土元素(Ce)在TiO2基体中的掺杂机理研究 |
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| 引用本文： | 贾兴涛,何文,冯英俊,赵红石,张旭东.稀土元素(Ce)在TiO2基体中的掺杂机理研究[J].化工科技,2006,14(3):1-4. |
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| 作者姓名： | 贾兴涛 何文 冯英俊 赵红石 张旭东 |
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| 作者单位： | 山东轻工业学院材料与科学工程系,山东,济南,250100 |
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| 摘 要： | 采用沉淀法、胶溶法、浸泡沉淀法制备了TiO2纳米粉体和CeO2/TiO2复合纳米粉体,通过TEM、HREM对粉体的形貌进行了表征,结果表明通过简单的稀土离子掺杂可以得到粒径均匀、颗粒细小的纳米粉体,其平均粒径从25 nm减至8 nm,并运用分子杂化轨道理论和晶体生长理论对稀土元素细化晶粒的作用进行了解释。
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| 关 键 词： | 纳米CeO2/TiO2超细粉体 掺杂机理 细化晶粒作用 |
| 文章编号： | 1008-0511(2006)03-0001-04 |
| 修稿时间： | 2006年3月1日 |
Study on the doped mechanism of lanthanum(cerium) in TiO2 substrate |
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| JIA Xing-tao,HE Wen,FENG Ying-jun,ZHAO Hong-shi,ZHANG Xu-dong.Study on the doped mechanism of lanthanum(cerium) in TiO2 substrate[J].Science & Technology In Chemical Industry,2006,14(3):1-4. |
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| Authors: | JIA Xing-tao HE Wen FENG Ying-jun ZHAO Hong-shi ZHANG Xu-dong |
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| Abstract: | Ultrafine TiO_2 powder and CeO_2/TiO_2 composites were prepared by precipitation,colloidal chemical method and intrusive precipitation method.The appearance of the obtained powders was characterized by TEM and HREM method,and the result showed that uniform and ultrafine nano-particle can be obtained by simple doping lanthanum in TiO_2 substrate,the average particle size decreased from 25?nm to 8?nm.The grain refining properties of lanthanum were explained by hybrid orbital theory and crystal growth(principles.) |
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| Keywords: | Nano-CeO_2/TiO_2 superfine powder Doped mechanism Grain refinement |
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