EXAFS investigation of iron local environment in metal-doped titania photocatalysts prepared by hydrothermal and high-energy ball milling routes

  • F. Vasiliu
  • L. Diamandescu
  • D. Macovei
  • C. M. Teodorescu
  • R. Nicula
Article

Abstract

Iron local environment was investigated by EXAFS in Fe- and (Fe, Eu)-doped TiO2 photocatalysts, prepared by hydrothermal and high-energy ball milling (HEBM) routes. In the case of the hydrothermal samples, the substitution of Ti4+ by Fe3+ ions was evidenced. For the samples prepared by HEBM, the iron environment corresponds to mixed metallic and oxidized (FeO, α-Fe2O3) configurations, without a clear evidence of iron incorporation into the TiO2 lattice. This could be related to the catalyst contamination by iron microparticles detached from the balls during milling process.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • F. Vasiliu
    • 1
  • L. Diamandescu
    • 1
  • D. Macovei
    • 1
  • C. M. Teodorescu
    • 1
  • R. Nicula
    • 2
  1. 1.National Institute of Materials PhysicsBucharest, MagureleRomania
  2. 2.Department of New MaterialsUniversity of RostockRostockGermany

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