Russian Chemical Bulletin

, Volume 55, Issue 10, pp 1743–1747 | Cite as

Preparation and characterization of low-amount Yb3+-doped TiO2 photocatalyst

  • H. Q. Jiang
  • P. Wang
  • X. L. Guo
  • H. Z. Xian


The nanoparticles of Yb3+-doped (0.125 wt.%) and pure TiO2 were prepared by an acid-catalyzed sol-gel method and characterized by X-ray diffraction, X-ray photoelectron spectroscopy, UV-Vis diffuse reflectance spectroscopy, and surface photovoltage spectroscopy; the specific surface of the samples was measured using the Brunauer-Emmett-Teller (BET) method. The photocatalytic degradation of methylene blue in aqueous solution was used as a probe reaction to estimate the photocatalytic activity of the prepared nanoparticles. The photocatalytic activity of Yb3+/TiO2 composite nanoparticles is much higher than that of pure TiO2. A low amount of Yb3+ in TiO2 can inhibit the anatase-rutile phase transformation of TiO2, prevent grain growth increasing the specific surface area, and favor the high-temperature stabilization of the pores. According to the surface voltage spectroscopy data, Tb3+-doping prevents recombination of photoinduced electrons and holes and improves the light absorption capacity of the particle surface.

Key words

titania Yb3+-doping nanopowders photocatalytic activity 


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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • H. Q. Jiang
    • 1
    • 2
  • P. Wang
    • 1
  • X. L. Guo
    • 1
  • H. Z. Xian
    • 1
  1. 1.Research Center for Green Chemical Technology, School of Municipal and Environmental EngineeringHarbin Institute of TechnologyHarbinChina
  2. 2.Department of ChemistryHarbin Normal UniversityHarbinChina

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