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Acta Chimica Sinica ›› 2008, Vol. 66 ›› Issue (6): 657-661. Previous Articles     Next Articles

Original Articles

B离子掺杂TiO2催化剂(TiO2－xBx)光催化活性的研究

龙绘锦1,4, 孟庆巨3, 元晶1, 杨文胜4, 曹亚安*,1,2   

  1. (1南开大学物理学院 天津 300071)
    (2南开大学泰达学院应用物理学院 天津 300457)
    (3吉林大学电子科学与工程学院 长春 130023)
    (4吉林大学化学学院 长春 130023)
  • 投稿日期:2007-05-09 修回日期:2007-10-25 发布日期:2008-03-28
  • 通讯作者: 曹亚安

Study on Photocatalytic Activity of Boron Doped TiO2 Catalyst (TiO2－xBx)

LONG Hui-Jin1,4; MENG Qing-Ju3; YUAN Jing1; YANG Wen-Sheng4; CAO Ya-An*,1,2   

  1. (1 College of Physics, Nankai University, Tianjin 300071)
    (2 Teda College of Applied Physics, Nankai University, Tianjin 300457)
    (3 College of Electronic Science and Engineering, Jilin University, Changchun 130023)
    (4 College of Chemistry, Jilin University, Changchun 130023)
  • Received:2007-05-09 Revised:2007-10-25 Published:2008-03-28
  • Contact: CAO Ya-An

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Samples of pure TiO2 and TiO2－xBx were obtained with Ti(OC4H9)4 by sol-gel methods. Compared with the pure TiO2, the samples of TiO2－xBx exhibited higher photocatalytic activity under both ultraviolet and visible light irradiation. The reasons were discussed, based on the characterization with XRD, Raman, XPS, UV-Vis and PL spectra. The lattice O is substituted by B, and the orbital of B2p is mixed with O2p orbitals, which is responsible for the band gap narrowing. The raise of the photocatalytic activity is chiefly because B doping enhanced the absorption of visible light, and promoted the separation of photogenerated carriers.

Key words: sol-gel method, B doping, TiO2－xBx photocatalyst, photocatalytic activity