CJCU

Chem. J. Chinese Universities

• 研究论文 • Previous Articles     Next Articles

Preparation and Photocatalytic Properties of Magnetically Separated Nitrogen-doped TiO2

XU Shi-Hong1*, FENG Dao-Lun2, SHANGGUAN Wen-Feng3, LI Deng-Xin1   

    1. School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China;
    2. College of Marine Environment and Security Engineering, Shanghai Maritime University, Shanghai 200135, China;
    3. Research Center for Combustion and Environment Technology, School of Mechanical and Power Engineering, Shanghai Jiaotong University, Shanghai 200240, China
  • Received:2007-10-24 Revised:1900-01-01 Online:2008-06-10 Published:2008-06-10
  • Contact: XU Shi-Hong

PDF (PC)

Abstract: A magnetically separated nitrogen-doped photocatalyst TiO2-xNx/SiO2/NiFe2O4(TSN) with a typical ferromagnetic hysteresis was prepared by a simple process: the magnetic SiO2/NiFe2O4(SN) dispersion and the visible-light-active photocatalyst TiO2-xNx were mixed, sonificated, dried, and calcined. The catalyst shows a photocatalytic activity for the degradation of methyl orange in water under visible light irradiation(λ>400 nm). X-ray diffractometer(XRD) and transmission electron microscope(TEM) were used to characterize the structure of photocatalyst TSN. The results indicate that the magnetic SN nanoparticles adhered to the surface of TiO2-xNx congeries. The degradation experiments of methyl orange indicate that the thin SiO2 layer between NiFe2O4 and TiO2-xNx could improve the photocatalytic activity of TSN.

Key words: Magnetical separation, Photocatalysis, TiO2, Visible light

CLC Number: 

TrendMD: