| Tb3+掺杂纳米WO3的制备及其光催化性能 |
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| 引用本文： | 刘华俊,彭天右,肖江蓉,赵德,彭正合. Tb3+掺杂纳米WO3的制备及其光催化性能[J]. 武汉大学学报(理学版), 2005, 51(4): 397-401 |
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| 作者姓名： | 刘华俊 彭天右 肖江蓉 赵德 彭正合 |
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| 作者单位： | 1. 武汉大学,化学与分子科学学院,湖北,武汉,430072
2. 武汉大学,化学与分子科学学院,湖北,武汉,430072;武汉大学,纳米科学与技术研究中心,湖北,武汉,430072 |
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| 基金项目： | 湖北省自然科学基金资助项目(2004ABA083);教育部留学回国人员基金资助项目 |
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| 摘 要： | 用Na2WO4和盐酸反应新生成的H2WO4与Tb(NO3)3,H2C2O4作起始原料,制备了稀土离子Tb3+掺杂的WO3纳米粉体,并采用透射电子显微镜(TEM)、X-射线粉末衍射(XRD)、漫反射光谱(DRS)和光电子能谱(XPS)等手段对其结构进行了表征.实验证明,稀土离子Tb3+的掺杂能拓展WO3的光响应范围,显著提高WO3对可溶性染料罗丹明B的光催化降解率和抗光腐蚀性.
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| 关 键 词： | 光催化 罗丹明B Tb^3＋ 掺杂 WO3 纳米粒子 |
| 文章编号： | 1671-8836(2005)04-0397-05 |
| 修稿时间： | 2005-01-18 |
Preparation and Photocatalytic Activity of Nanoscale Tb3+-Doped WO3 |
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| LIU Hua-jun,PENG Tian-You,XIAO Jiang-rong,ZHAO De,PENG Zheng-he. Preparation and Photocatalytic Activity of Nanoscale Tb3+-Doped WO3[J]. JOurnal of Wuhan University:Natural Science Edition, 2005, 51(4): 397-401 |
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| Authors: | LIU Hua-jun PENG Tian-You XIAO Jiang-rong ZHAO De PENG Zheng-he |
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| Affiliation: | LIU Hua-jun~1,PENG Tian-you~ |
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| Abstract: | Tb-doped WO_3 nanopowders was synthesized from fresh-made H_2WO_4 and Tb(NO_3)_3 by (using) H_2C_2O_4 as dispersant and precipitator. The obtained samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-Vis absorption spectra, and X-ray photoelectron spectrometry (XPS). Moreover, the obtained samples were employed for the photocatalytic degradation of Rhodamine B in aqueous WO_3 suspension. The results show that Tb doping not only extends the absorption spectra of WO_3, but also enhances the photocatalytic activity and stability of WO_3. |
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| Keywords: | photocatalysis Rhodamine B Tb~(3+) doped WO_3 nanoparticles |
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