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高等学校化学研究 ›› 2001, Vol. 17 ›› Issue (2): 187-192.

• Articles • 上一篇    下一篇

The Promoting Effect on the Activities of Fe Doped TiO2 Photocatalysts

YU Xi-bin, WANG Gui-hua, LI He-xing   

  1. Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
  • 收稿日期:2000-05-01 出版日期:2001-04-24 发布日期:2011-08-04
  • 基金资助:

    Titanium|Fe doped photocatalyst|Photocatalytic activity|Tetracycline

The Promoting Effect on the Activities of Fe Doped TiO2 Photocatalysts

YU Xi-bin, WANG Gui-hua, LI He-xing   

  1. Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
  • Received:2000-05-01 Online:2001-04-24 Published:2011-08-04
  • Supported by:

    Supported by Shanghai Education Committee Science Development Foundation.

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摘要： The particles of titanium-iron (Ti/Fe) complex with different Fe contents were prepared by means of the sol-gel method and used as a photocatalyst. The activity of the catalyst was investi gated as a function of the Fe content during the liquid-phase oxidation of tetracycline, which showed an enhancement at the low Fe content. The XRD, Raman, XPS, and UV-Vis absorp tion spectra indicated that the crystalline structure of the Ti/Fe complex particles changed from anatase phase to rutile phase when the Fe content increased. The isolated Fe2O3, Fe3O4, FeO species were observed and Fe3+ ions were highly dispersed in the TiO2 matrixes, then Ti--O--Fe species were formed. These species increased the surface defects of the Ti/Fe particles. Also, ac tive hydroxyl radicals could be generated in the catalytic transformation, which led to the higher activity of the catalyst than bare TiO2 for the degradation of tetracycline.

关键词: Titanium, Fe doped photocatalyst, Photocatalytic activity, Tetracycline

Abstract: The particles of titanium-iron (Ti/Fe) complex with different Fe contents were prepared by means of the sol-gel method and used as a photocatalyst. The activity of the catalyst was investi gated as a function of the Fe content during the liquid-phase oxidation of tetracycline, which showed an enhancement at the low Fe content. The XRD, Raman, XPS, and UV-Vis absorp tion spectra indicated that the crystalline structure of the Ti/Fe complex particles changed from anatase phase to rutile phase when the Fe content increased. The isolated Fe2O3, Fe3O4, FeO species were observed and Fe3+ ions were highly dispersed in the TiO2 matrixes, then Ti--O--Fe species were formed. These species increased the surface defects of the Ti/Fe particles. Also, ac tive hydroxyl radicals could be generated in the catalytic transformation, which led to the higher activity of the catalyst than bare TiO2 for the degradation of tetracycline.

Key words: Titanium, Fe doped photocatalyst, Photocatalytic activity, Tetracycline