| 不同晶型的纳米TiO2粉体的低温制备及光催化性能研究 |
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| 引用本文： | 谭小伟,高家诚,邹建,王勇.不同晶型的纳米TiO2粉体的低温制备及光催化性能研究[J].兵器材料科学与工程,2007,30(1):27-31. |
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| 作者姓名： | 谭小伟 高家诚 邹建 王勇 |
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| 作者单位： | 重庆大学,材料科学与工程学院,重庆,400044;重庆大学,材料科学与工程学院,重庆,400044;重庆大学,材料科学与工程学院,重庆,400044;重庆大学,材料科学与工程学院,重庆,400044 |
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| 基金项目： | 重庆市科技攻关项目，重庆大学校科研和教改项目 |
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| 摘 要： | 采用TiCl4水解法制备了锐钛矿和金红石型的纳米TiO2,用XRD和TEM对粉体的晶体结构和表面形貌进行了表征。在400～1 000℃之间对锐钛矿型TiO2进行煅烧,分析了不同温度处理后样品的晶体结构和光催化活性的变化。结果表明:以TiCl4为前驱体,在90℃时水解制得的锐钛矿型纳米TiO2在600～～800℃之间开始向金红石型转变,在800℃时全部转变为金红石型纳米TiO2;600℃煅烧处理后的纳米TiO2具有最好的光催化活性,光照3 h后对甲基橙的降解率可以达到86.96%。
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| 关 键 词： | TiCl4 水解法 锐钛矿型 金红石型 光催化活性 |
| 文章编号： | 1004-244X（2002）01-0027-04 |
| 修稿时间： | 2006-07-17 |
Preparation of nano-TiO2 powder at low temperature and the study on its photocatalytic ability |
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| TAN Xiao-wei,GAO Jia-cheng,ZOU Jian,WANG Yong.Preparation of nano-TiO2 powder at low temperature and the study on its photocatalytic ability[J].Ordnance Material Science and Engineering,2007,30(1):27-31. |
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| Authors: | TAN Xiao-wei GAO Jia-cheng ZOU Jian WANG Yong |
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| Affiliation: | College of Material Science and Engineering, Chongqing University, Chongqing 400044, China |
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| Abstract: | Anatase and rutile nano-TiO2 powders were synthesized by directly hydrolysis of TiCl4 solution.XRD and TEM were used to characterize the crystal structure and surface morphology.Then anatase nano-TiO2 powder was calcined at the temperature between 400~1 000 ℃.The changes of the crystal structure and photocatalytic activity of samples treated at different temperature were analyzed.The results indicate that anatase nano-TiO2 starts to transform into rutile structure at the temperature of 600~800 ℃,and completes this transformation at 800 ℃.Nano-TiO2 calcined at 600 ℃ exhibits the best photocatalytic activity,and the methyl orange solution was degraded by 86.96 % after 3 h illumination. |
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| Keywords: | TiCl4 |
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