Enhanced photo-catalytic activity of TiO2 nanostructured thin films under solar light by Sn and Nb co-doping

被引：0
作者：
Behzad Koozegar Kaleji
Navid Hosseinabadi
Akira Fujishima
机构：
[1] Malayer University,Department of Materials Engineering, Faculty of Engineering
[2] Tarbiat Modares University,Department of Materials Engineering, Faculty of Engineering
[3] Kanagawa Academy of Science and Technology,Photo
[4] Tokyo University of Science,catalystic Group
来源：
Journal of Sol-Gel Science and Technology | 2013年 / 65卷
关键词：
Titania thin film; Sol–gel dip coating; Co-dopant; Photo-catalytic activity; Optical properties;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study, preparation of Sn and Nb co-doped TiO2 dip-coated thin films on glazed porcelain substrates via sol–gel process have been investigated. The effects of co-doping content on the structural, optical, and photo-catalytic properties of applied thin films have been studied by X-ray diffraction (XRD), field emission SEM (FE-SEM), high resolution transmission electron microscopy (HR-TEM), and UV–Vis absorption spectroscopy. Surface chemical state of thin films was examined by atomic X-ray photoelectron spectroscopy (XPS). XRD results suggest that adding impurities has a great effect on the crystallinity and particle size of TiO2. Titania Rutile phase formation in thin film was promoted by Sn4+ addition but was inhibited by Nb5+ doping. The prepared co-doped TiO2 photo-catalyst films showed optical absorption edge in the visible light area and exhibited excellent photo-catalytic ability for degradation of methylene blue (MB) solution under solar irradiation. Comparison with undoped and Sn or Nb-doped TiO2, codoped TiO2 shows an obviously higher catalytic activity under solar irradiation.
引用
收藏
页码：195 / 203
页数：8
相关论文
共 132 条
[1]  
Yin S(2006)undefined J Photochem Photobiol A Chem 179 105-114
[2]  
Ihara K(2003)undefined J Mater Chem 13 2996-3001
[3]  
Aita Y(2006)undefined Appl Catal B Environ 63 45-59
[4]  
Komatsu M(2002)undefined J Phys Chem B 106 5029-5034
[5]  
Sato T(2005)undefined Appl Catal A General 285 181-189
[6]  
Yin S(2007)undefined Appl Catal B Environ 74 26-33
[7]  
Yamaki H(2007)undefined Catal Commun 8 1267-1273
[8]  
Komatsu M(2009)undefined J Phys Chem C 113 18121-18124
[9]  
Zhang Q(2004)undefined Appl Surf Sci 221 17-24
[10]  
Wang J(2007)undefined Appl Catal B Environ 73 51-59
12345678910