| 纳米TiO2粉体的制备及其光催化性能研究 |
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| 引用本文： | 钟文建,余取明.纳米TiO2粉体的制备及其光催化性能研究[J].武汉理工大学学报,2007,29(6):12-15. |
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| 作者姓名： | 钟文建 余取明 |
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| 作者单位： | 1. 湖南省国际工程咨询公司,长沙,410011
2. 长沙学院生物工程与环境科学系,长沙410003 |
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| 基金项目： | 长沙市科技局科技计划项目 |
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| 摘 要： | 以偏钛酸为原料通过常温水解-沉淀法制备了纳米TiO2粉体,用XRD、Raman和TEM等手段对粉体的晶型和形貌进行表征。TiO2粉体在热处理温度400-600℃时为锐钛矿,当热处理温度达700℃时,为锐钛矿和金红石的混合晶型,热处理温度达到750℃,样品中锐钛矿完全转变成金红石;用亚甲基蓝为目标降解物,研究了其对亚甲基蓝的降解性能,当分散剂加入量（质量分数）为13.5%,氨水溶液的pH值为4.0时得到的光催化剂粉体的晶粒尺寸均匀,粒径为10-20 nm,其降解亚甲基蓝的效率最高。
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| 关 键 词： | 光催化 纳米二氧化钛 水解沉淀法 |
| 文章编号： | 1671-4431（2007）06-0012-04 |
| 修稿时间： | 2007-01-06 |
Preparation of Nano-TiO2 Powders and It's Photocatalytic Properties |
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| ZHONG Wen-jian,YU Qu-min.Preparation of Nano-TiO2 Powders and It''''s Photocatalytic Properties[J].Journal of Wuhan University of Technology,2007,29(6):12-15. |
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| Authors: | ZHONG Wen-jian YU Qu-min |
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| Affiliation: | 1. Hunan International Engineering Consulting Corporation, Changsha 410011, China; 2. Department of Biological Engineering and Environmental Science, Changsha University, Changsha 410003, China |
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| Abstract: | Nano-TiO2 powders were prepared with metatitanic acid as the initial materials by hydrolyzation-precipitation method in normal temperature and were characterized with XRD and TEM. The photocatalytic properties of nano-TiO2 were researched by degradating the methylene blue. The result shows that the degradation rate is the most obvious in degradating the methylene blue when using 13.5% of HPC as dispersant and adjusting the pH of the solution for 4.0. |
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| Keywords: | photocatalytic nano-TiO2 powder hydrolyzation-precipitation method |
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