Fe3+,Cr3+-doped TiO2 Photocatalysts Preparedby the Sol-Gel and Hydrothermal Method

doi:10.7517/j.issn.1674-0475.2004.04.241

Abstract

Abstract: Fe³⁺,Cr³⁺-doped anatase nanosized TiO₂ photocatalysts have been prepared by combining sol-gel method with hydrothermal treatment.The samples were characterized by XRD,BET,TEM,EPR and UV-Vis diffuse reflectance spectra(DRS).For the liquid phase photocatalytic decolorization of XRG,the photoactivity of TiO₂ doped with appropriate content of Fe³⁺or Cr³⁺exceeded those of non-doped TiO₂ and P25(Degussa)under visible light irradiation,meanwhile their photoactivity under UV excitation was not reduced by doping.

Key words: titanium dioxide, photocatalyst, sol-gel, hydrothermal treatment, doping

CLC Number:

ZHU Jie-fang, FU Wen, HE Bin, ZHANG Jin-long. Fe³⁺,Cr³⁺-doped TiO₂ Photocatalysts Preparedby the Sol-Gel and Hydrothermal Method[J]. Imaging Science and Photochemistry, 2004, 22(4): 241-243.

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Fe³⁺,Cr³⁺-doped TiO₂ Photocatalysts Preparedby the Sol-Gel and Hydrothermal Method

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