F离子掺杂TiO2的性能研究

doi:10.7517/j.issn.1674-0475.2007.03.223

影像科学与光化学 ›› 2007, Vol. 25 ›› Issue (3): 223-229.DOI: 10.7517/j.issn.1674-0475.2007.03.223

F离子掺杂TiO₂的性能研究

江宏富, 周作兴, 刘杏芹, 孟广耀

中国科学技术大学, 材料科学与工程系, 安徽, 合肥, 230026

收稿日期:2006-11-15 修回日期:2007-01-18 出版日期:2007-05-23 发布日期:2007-05-23
通讯作者: 孟广耀,E-mail:mgym@ustc.edu.cn.
基金资助:
国家973规划项目(2003CB615700)

Study on the Performance of F-Doped TiO₂

JIANG Hong-fu, ZHOU Zuo-xing, LIU Xing-qin, MENG Guang-yao

Department of Material Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China

Received:2006-11-15 Revised:2007-01-18 Online:2007-05-23 Published:2007-05-23

摘要/Abstract

摘要： 以NH₄F为掺杂剂,采用溶胶-凝胶法制备F离子掺杂型TiO₂光催化剂,对其进行XRD、XPS和PL表征,结果表明,F离子掺杂TiO₂由于Ti-F配位体的形成而能抑制金红石相的生成,同时F离子掺杂能增加TiO₂表面缺陷浓度并降低Ti_2P键的结合能,另外,由于F离子能取代Ti-OH配位体而降低了表面羟基氧浓度.光催化研究结果表明,F离子掺杂提高了TiO₂光催化活性近1.5倍.

关键词: TiO₂, 光催化, F离子掺杂, NH₄F

Abstract: F-doped TiO₂ photocatalyst was prepared by sol-gel method with NH₄F as dopant.The catalyst was characterized by XRD,XPS,and PL.It was found that the phase formation of rutile was suppressed by F-doping due to the formation of Ti-F ligand.Moreover,the surface defect of TiO₂ was increased while the binding energy of Ti2P was decreased by F-doping.It was also found that the surface OOH concentration was decreased by F-doping due to the F ions replacing Ti-OH bond.The results of photocatalytic reaction indicated that the photocatalytic activity of F-doped TiO₂ was 1.5 times higher than that of undoped TiO₂.

Key words: TiO₂, photocatalysis, F-doping, NH₄F

中图分类号:

江宏富, 周作兴, 刘杏芹, 孟广耀. F离子掺杂TiO₂的性能研究[J]. 影像科学与光化学, 2007, 25(3): 223-229.

JIANG Hong-fu, ZHOU Zuo-xing, LIU Xing-qin, MENG Guang-yao. Study on the Performance of F-Doped TiO₂[J]. Imaging Science and Photochemistry, 2007, 25(3): 223-229.

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[1] 宋海燕.新型光催化材料的制备及催化性能研究(博士学位论文).合肥:中国科学技术大学材料科学与工程系,2006.

F离子掺杂TiO₂的性能研究

Study on the Performance of F-Doped TiO₂

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