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Journal of Materials Science

, Volume 42, Issue 22, pp 9239–9244 | Cite as

Visible-light responsive zinc ferrite doped titania photocatalyst for methyl orange degradation

  • Ping ChengEmail author
  • Changsheng Deng
  • Mingyuan Gu
  • Wenfeng Shangguan
Article

Abstract

Visible-light responsive zinc ferrite doped titania (ZFDT) photocatalysts were prepared by sol-gel method. Diffuse Reflectance Spectroscopy (DRS) result shows that the absorption edge of ZFDT has moved to the visible spectrum range and a very large redshift occurs in comparison with the undoped titania. X-ray diffraction (XRD) results show that zinc ferrite can prevent the transformation of titania from anatase to rutile when the content of zinc ferrite is above 1.5%; while the phase transformation is promoted when its content is below 1.5%. In the latter case, zinc ferrite was assumed to exist as separate zinc and ferric cations in the lattice of titania in the form of oxides, both of which promote the phase transformation as previously reported in other literatures. Field emission scanning electron micrography (FE-SEM) shows that the average particle size of 1.5%ZnFe2O4/TiO2 calcined at 500 °C is about 70 nm. The photocatalytic experimental results exhibit that ZFDT powders can effectively photodegrade methyl orange under visible light irradiation and the maxium photoactivity is achieved when the amount of zinc ferrite is 1.5%.

Keywords

Ferrite Rutile Methyl Orange Visible Light Irradiation ZnFe2O4 

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Ping Cheng
    • 1
    Email author
  • Changsheng Deng
    • 1
  • Mingyuan Gu
    • 2
  • Wenfeng Shangguan
    • 2
  1. 1.State Key Lab of New Ceramics and Fine Processing, Institute of Nuclure & New Energy TechnologyTsinghua UniversityBeijingChina
  2. 2.State Key Laboratory of MMCsShanghai Jiaotong UniversityShanghaiChina

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