掺硼纳米TiO2的制备及光催化性能研究

doi:10.7517/j.issn.1674-0475.2010.04.287

影像科学与光化学 ›› 2010, Vol. 28 ›› Issue (4): 287-295.DOI: 10.7517/j.issn.1674-0475.2010.04.287

掺硼纳米TiO₂的制备及光催化性能研究

汪应灵¹, 谢友海², 袁建梅¹, 周庆祥², 刘国光^2,3

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

收稿日期:2010-03-04 修回日期:2010-04-02 出版日期:2010-07-23 发布日期:2010-07-23
通讯作者: 汪应灵(1972-), 女, 硕士, 讲师, 主要从事纳米材料的制备及光谱性能研究.
基金资助:
国家自然科学基金项目(20877022);河南省基础与前沿技术研究计划项目(092300410105,102300410101);河南省教育厅自然科学研究计划项目(2008A610007,2009A610008)

Preparation of B-Doped TiO₂ Nanoparticles and Their Photocatalytic Activities

WANG Ying-ling¹, XIE You-hai², YUAN Jian-mei¹, ZHOU Qing-xiang², LIU Guo-guang^2,3

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

Received:2010-03-04 Revised:2010-04-02 Online:2010-07-23 Published:2010-07-23

摘要/Abstract

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.

关键词: TiO₂, 硼, 掺杂, 溶胶-凝胶法, 光催化活性

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.

Key words: TiO₂, Boron, doping, sol-gel method, photocatalytic activity

中图分类号:

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.

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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掺硼纳米TiO₂的制备及光催化性能研究

Preparation of B-Doped TiO₂ Nanoparticles and Their Photocatalytic Activities

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