| Preparation and photocatalytic activity of Gd-doped TiO2 nanofibre |
| |
| 引用本文： | 周艺 张世英 朱志平 李永坤. Preparation and photocatalytic activity of Gd-doped TiO2 nanofibre[J]. 中南工业大学学报(英文版), 2005, 12(6): 657-661. DOI: 10.1007/s11771-005-0064-3 |
| |
| 作者姓名： | 周艺 张世英 朱志平 李永坤 |
| |
| 作者单位： | [1]Department of Chemistry and Enviroment, Changsha University of Science and technology, Changsha 410076, China [2]Department of Chemistry, Changsha University, Changsha 410007, China [3]School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China |
| |
| 基金项目： | China，湖南省教委科研项目 |
| |
| 摘 要： | In order to realize the photocatalysis of TiO2 in the sunlight and directly apply it to waste water treatment, the Gd-doped TiO2 nanofibre was synthesized using two-step synthesis method as follows： Firstly, potassium carbonate, titanium dioxide and proper gadolinium oxide （dopant） were calcined in the muffle at high temperature and the doped gadolinium K2Ti4O9 fibres were obtained; secondly, the fibre was heated using glycerol as solvent until Gd-doped TiO2 nanofibres were obtained. The synthesized samples were characterized using scanning electron microscopy, transmission electron microscopy and X-ray diffraction. The results show that Gd-doped TiO2 nanofibre heat-treated by glycerol solvent can inhibit the agglomeration, so the grain diameter of the fibre is smaller than that without heat-treated with glycerol. Meanwhile, the diameter of the fibre decreases with the increase of the heating temperature and time. 97%- 98% of Gd-doped TiO2 nanofibre is anatase. The photocatalysis results showed that the photocatalysis activity of Gd-doped TiO2 nanofibre is just a little lower than that of TiO2 powder.
|
| 关 键 词： | 钆 稀土 二氧化钛 光催化剂 废水处理 纳米管 |
| 文章编号： | 1005-9784（2005）06-0657-05 |
| 收稿时间： | 2005-06-30 |
| 修稿时间： | 2005-08-28 |
Preparation and photocatalytic activity of Gd-doped TiO2 nanofibre |
| |
| ZHOU Yi,ZHANG Shi-ying,ZHU Zhi-ping,LI Yong-kun. Preparation and photocatalytic activity of Gd-doped TiO2 nanofibre[J]. Journal of Central South University of Technology, 2005, 12(6): 657-661. DOI: 10.1007/s11771-005-0064-3 |
| |
| Authors: | ZHOU Yi ZHANG Shi-ying ZHU Zhi-ping LI Yong-kun |
| |
| Affiliation: | (1) Department of Chemistry and Environment, Changsha University of Science and technology, 410076 Changsha, China;(2) Department of Chemistry, Changsha University, 410007 Changsha, China;(3) School of Chemistry and Chemical Engineering, Central South University, 410083 Changsha, China |
| |
| Abstract: | In order to realize the photocatalysis of TiO2 in the sunlight and directly apply it to waste water treatment, the Gd-doped TiO2 nanofibre was synthesized using two-step synthesis method as follows: Firstly, potassium carbonate, titanium dioxide and proper gadolinium oxide (dopant) were calcined in the muffle at high temperature and the doped gadolinium K2Ti4O9 fibres were obtained; secondly, the fibre was heated using glycerol as solvent until Gd-doped TiO2 nanofibres were obtained. The synthesized samples were characterized using scanning electron microscopy, transmission electron microscopy and X-ray diffraction. The results show that Gd-doped TiO2 nanofibre heat-treated by glycerol solvent can inhibit the agglomeration, so the grain diameter of the fibre is smaller than that without heat-treated with glycerol. Meanwhile, the diameter of the fibre decreases with the increase of the heating temperature and time. 97%- 98% of Gd-doped TiO2 nanofibre is anatase. The photocatalysis results showed that the photocatalysis activity of Gd-doped TiO2 nanofibre is just a little lower than that of TiO2 powder. |
| |
| Keywords: | photocatalytic activity two-step synthesis method Gd-doped TiO2 nanofibre K2Ti4O9 photocatalytic degradation |
| 本文献已被 维普 万方数据 SpringerLink 等数据库收录！ |
|
