| 掺硼纳米TiO2的制备及光催化性能研究 |
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| 引用本文： | 汪应灵,谢友海,袁建梅,周庆祥,刘国光.掺硼纳米TiO2的制备及光催化性能研究[J].影像科学与光化学,2010,28(4):287-295. |
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| 作者姓名： | 汪应灵 谢友海 袁建梅 周庆祥 刘国光 |
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| 作者单位： | 1. 新乡医学院, 基础医学院, 河南, 新乡453003;2. 河南师范大学, 化学与环境科学学院, 黄淮水环境与污染防治省部共建教育部重点实验室, 河南, 新乡453007;3. 广东工业大学, 环境科学与工程学院, 广东, 广州, 510006 |
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| 基金项目： | 国家自然科学基金项目，河南省基础与前沿技术研究计划项目，河南省教育厅自然科学研究计划项目 |
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| 摘 要： | 采用改进的Sol-gel方法,制备了单分散椭球形微孔结构的掺B纳米TiO2光催化剂,并用TG-DTA、XRD、XPS、UV-Vis、TEM、BET等手段进行表征.以难生化降解的染料罗丹明B为目标降解物,采用HPLC检测,通过不同光照时间下染料降解率考察了产物的光催化活性.结果表明,改进的Sol-gel法制得的光催化剂具有明显的孔结构,而且比表面积大、孔径分布窄、粒径小、分散性好;适量B的掺杂能够有效促进TiO2纳米粒子的光催化活性.最佳催化剂制备条件:B掺杂的摩尔分数为20%、450℃煅烧2 h,此时所制得的B-TiO2光催化剂活性比纯TiO2有显著提高.
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| 关 键 词： | TiO2 硼 掺杂 溶胶-凝胶法 光催化活性 |
| 收稿时间： | 2010-03-04 |
Preparation of B-Doped TiO2 Nanoparticles and Their Photocatalytic Activities |
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| WANG Ying-ling,XIE You-hai,YUAN Jian-mei,ZHOU Qing-xiang,LIU Guo-guang.Preparation of B-Doped TiO2 Nanoparticles and Their Photocatalytic Activities[J].Imaging Science and Photochemistry,2010,28(4):287-295. |
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| Authors: | WANG Ying-ling XIE You-hai YUAN Jian-mei ZHOU Qing-xiang LIU Guo-guang |
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| Institution: | 1. School of Basic Medicine, Xinxiang Medical College, Xinxiang 453003, Henan, P.R.China;2. College of Chemistry and Environmental Science, Key Laboratory for Yellow River and Huaihe River Water Environmental and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang 453007, Henan, P.R.China;3. Faculty of Environment Science & Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, P.R.China |
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| Abstract: | Using acetic acid as catalyzer and chelate,a sort of monodispersed,ellipsoidal and hollow B doped TiO2 nanoparticles is successfully prepared by Sol-gel method,which is based on an improved Sol-gel technique using boric acid triethylester,by controlling the hydrolysis of these precursors with an acetic acid.The TiO2 nanoparticles prepared were characterized by means of TG-DTA、XRD、XPS、UV-Vis、TEM and BET.The photocatalytic activity of the elaborated powders was studied following the degradation of Rhodamine B.The results showed that the photocatalytic activity of B doped TiO2 prepared by Sol-gel method is much higher than that of pure TiO2 particles.The most efficient degradation of Rhodamine B was found with TiO2 particles doped with 20% B in mole fraction and calcined at 450 ℃.Also the reason for the enhancement of the photocatalytic activity of TiO2 by B doping was discussed. |
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| Keywords: | TiO2 |
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