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| 镧、铁共掺TiO_2光催化剂的合成及其光催化活性研究 | |
| 引用本文： | 王丹军,郭莉,李东升,付峰,韦庆婷,高利峰.镧、铁共掺TiO_2光催化剂的合成及其光催化活性研究[J].稀土,2009,30(6). |
| 作者姓名： | 王丹军 郭莉 李东升 付峰 韦庆婷 高利峰 |
| 作者单位： | 1. 延安大学,化学与化工学院,陕西省化学反应工程重点实验室,陕西延安716000;三峡大学,机械与材料学院,湖北宜昌443002 2. 延安大学,化学与化工学院,陕西省化学反应工程重点实验室,陕西延安716000 3. 三峡大学,机械与材料学院,湖北宜昌443002 |
| 基金项目： | 国家自然科学基金项目资助，教育部新世纪优秀人才支持计划，教育部重点科研基金，陕西省教育厅专项科研基金，陕西省重点实验室重点科研基金 |
| 摘 要： | 采用溶胶-微波法(Sol-Microwave Method)合成了镧、铁共掺纳米TiO_2光催化剂,借助X-射线衍射(XRD) 、光电子能谱(XPS)、紫外-可见吸收光谱(UV-vis)等技术对样品组成和光吸收特性进行了表征,同时以高压汞灯(HPML)为实验光源、罗丹明B为模型污染物考察了样品的光催化活性.结果表明,所得TiO_2为锐钛矿型,共掺体系的最佳掺杂量为La 0.4%,Fe 0.1%,所获最佳共掺TiO_2对罗丹明B表现出较高的光催化活性,高压汞灯下反应45min,降解率达到92.6%. |
| 关 键 词： | 纳米TiO_2 共掺杂 溶胶-微波法 光催化活性 |
Synthesis and Photocatalytic Activity of Lanthanum & Iron Codoped Nano-titania Photocatalyst |
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| WANG Dan-jun,GUO Li,LI Dong-sheng,FU Feng,WEI Qing-ting,GAO Li-feng.Synthesis and Photocatalytic Activity of Lanthanum & Iron Codoped Nano-titania Photocatalyst[J].Chinese Rare Earths,2009,30(6). | |
| Authors: | WANG Dan-jun GUO Li LI Dong-sheng FU Feng WEI Qing-ting GAO Li-feng |
| Abstract: | La,Fe-codopednano-TiO_2 photocatalyst was synthesized via microwave-sol process. XRD,XPS and UV-vis absorption spectrum techniques were applied to investigate spectrum properties and chemical compositionof as synthesized samples. The samples were indicated to be pure anatase phase nano-TiO_2. Photocatalytic experiment results showed that titanium dioxide's photocatalytic activity increased obviously after La and Fe codoping. When the doping amount of La and Fe was 0.4% and 0.1% respectively,the as-synthesized sample exhibited high photocatalytic activity,and decolor rate of model pollutant Rodamine B was 92.6% after high pressure mucury lamp irradiation for 45 mins. |
| Keywords: | nano-TiO_2 La Fe-codoping sol-microwave process photocatalyticactivity |
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