Fabrication of the C-N co-doped rod-like TiO2 photocatalyst with visible-light responsive photocatalytic activity

被引:19
作者
Li, Liang-Hai [1 ]
Lu, Juan [1 ]
Wang, Zuo-Shan [1 ,2 ]
Yang, Lu [1 ]
Zhou, Xiu-Feng [1 ]
Han, Lu [1 ]
机构
[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215021, Peoples R China
[2] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
关键词
Nanostructures; Semiconductors; Crystal growth; Catalytic properties; NITROGEN; CARBON; TITANIA; ACID; STEP; FILM;
D O I
10.1016/j.materresbull.2012.02.032
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The C-N co-doped TiO2 nanorods were synthesized by the vapor transport method of water molecules, and urea was used as the carbon and nitrogen source. The samples were characterized by X-ray diffraction and photoelectron spectroscopy analysis. The scanning electron microscope images showed that as-prepared TiO2 powders were nanorods, which were formed by the stacking of nanoparticles with a uniform size around 40 nm. The degradation of methylene blue with the prepared nanorods demonstrated the photocatalytic activities of TiO2 under visible light are improved by doping with C and N elements. The main reasons were discussed: doping with C and N elements could enhance the corresponding visible-light absorption of TiO2. On the other hand, doping C and N could create more oxygen vacancies in the TiO2 crystals, which could capture the photogenerated electrons more effectively. Thus, more photogenerated holes could be left to improve the photocatalytic activity of TiO2. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1508 / 1512
页数:5
相关论文
共 19 条
[1]   Visible-light photocatalysis in nitrogen-doped titanium oxides [J].
Asahi, R ;
Morikawa, T ;
Ohwaki, T ;
Aoki, K ;
Taga, Y .
SCIENCE, 2001, 293 (5528) :269-271
[2]   Carbon and nitrogen co-doped TiO2 with enhanced visible-light photocatalytic activity [J].
Chen, Daimei ;
Jiang, Zhongyi ;
Geng, Jiaqing ;
Wang, Qun ;
Yang, Dong .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2007, 46 (09) :2741-2746
[3]   Highly efficient formation of visible light tunable TiO2-xNx photocatalysts and their transformation at the nanoscale [J].
Gole, JL ;
Stout, JD ;
Burda, C ;
Lou, YB ;
Chen, XB .
JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (04) :1230-1240
[4]   Large-scale synthesis of single-crystalline rutile TiO2 nanorods via a one-step solution route [J].
Huang, Xiangping ;
Pan, Chunxu .
JOURNAL OF CRYSTAL GROWTH, 2007, 306 (01) :117-122
[5]   Characterization of Visible Light Response N-F Codoped TiO2 Photocatalyst Prepared by Acid Catalyzed Hydrolysis [J].
Li Xiao-Hui ;
Liu Shou-Xin .
ACTA PHYSICO-CHIMICA SINICA, 2008, 24 (11) :2019-2024
[6]  
[林华盛 Lin Huasheng], 2007, [化工新型材料, New Chemical Materials], V35, P27
[7]   Synthesis and characterization of phosphor and nitrogen co-doped titania [J].
Lin, L. ;
Zheng, R. Y. ;
Xie, J. L. ;
Zhu, Y. X. ;
Xie, Y. C. .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 76 (1-2) :196-202
[8]   Preparation and characterization of visible-light-driven titania photocatalyst co-doped with boron and nitrogen [J].
Ling, Qincai ;
Sun, Jianzhong ;
Zhou, Qiyun .
APPLIED SURFACE SCIENCE, 2008, 254 (10) :3236-3241
[9]   Role of oxygen vacancy in the plasma-treated TiO2 photocatalyst with visible light activity for NO removal [J].
Nakamura, I ;
Negishi, N ;
Kutsuna, S ;
Ihara, T ;
Sugihara, S ;
Takeuchi, E .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2000, 161 (1-2) :205-212
[10]   XPS STUDY OF THE HALOGENATION OF CARBON-BLACK .2. CHLORINATION [J].
PAPIRER, E ;
LACROIX, R ;
DONNET, JB ;
NANSE, G ;
FIOUX, P .
CARBON, 1995, 33 (01) :63-72