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Volume 14 Issue 6
Dec.  2007
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Zhongqing Liu, Yanping Zhou, Zhenghua Li, Yichao Wang, and Changchun Ge, Enhanced photocatalytic activity of (La, N) co-doped TiO2 by TiCl4 sol-gel autoigniting synthesis, J. Univ. Sci. Technol. Beijing, 14(2007), No. 6, pp. 552-557. https://doi.org/10.1016/S1005-8850(07)60127-3
Cite this article as:
Zhongqing Liu, Yanping Zhou, Zhenghua Li, Yichao Wang, and Changchun Ge, Enhanced photocatalytic activity of (La, N) co-doped TiO2 by TiCl4 sol-gel autoigniting synthesis, J. Univ. Sci. Technol. Beijing, 14(2007), No. 6, pp. 552-557. https://doi.org/10.1016/S1005-8850(07)60127-3
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Materials

Enhanced photocatalytic activity of (La, N) co-doped TiO2 by TiCl4 sol-gel autoigniting synthesis

  • 通讯作者:

    Changchun Ge    E-mail: ustbgcc@163.com

  • (La, N) co-doped TiO2 photocatalysts were synthesized using TiC14 sol-gel autoignidng synthesis (SAS) starting from a complex compound system of TiCl4-La(NO3)3-citric acid-NH4NO3-NH3H2O, in which the (La, N) co-doped process was accompushed in the formation of TiO2 nanocrystals. The prepared samples were characterized by using X-ray diffraction (XRD), X-ray photoemission spectroscopy (XPS) and UV-vis diffuse reflectance spectra. The results indicated that nitrogen and lanthanum were incorporated into the lattice and interstices of titania nanocrystals, which resulted in narrowing the band gap and promoting the separation of photoexcited hole-electron pairs, respectively, and showing expected red-shifts and enhanced photocatalytic activity under visible light. The mechanism on nitrogen doping and enhancement in photocatalyfic activity of (La, N) co-doped titania by SAS was discussed in detail.
  • Materials

    Enhanced photocatalytic activity of (La, N) co-doped TiO2 by TiCl4 sol-gel autoigniting synthesis

    + Author Affiliations
    • (La, N) co-doped TiO2 photocatalysts were synthesized using TiC14 sol-gel autoignidng synthesis (SAS) starting from a complex compound system of TiCl4-La(NO3)3-citric acid-NH4NO3-NH3H2O, in which the (La, N) co-doped process was accompushed in the formation of TiO2 nanocrystals. The prepared samples were characterized by using X-ray diffraction (XRD), X-ray photoemission spectroscopy (XPS) and UV-vis diffuse reflectance spectra. The results indicated that nitrogen and lanthanum were incorporated into the lattice and interstices of titania nanocrystals, which resulted in narrowing the band gap and promoting the separation of photoexcited hole-electron pairs, respectively, and showing expected red-shifts and enhanced photocatalytic activity under visible light. The mechanism on nitrogen doping and enhancement in photocatalyfic activity of (La, N) co-doped titania by SAS was discussed in detail.
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