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    Photocatalytic oxidation of water and air contaminants with metal doped BiTaO4 irradiated with visible light

    Access Status
    Fulltext not available
    Authors
    Ullah, R
    Sun, Hongqi
    Ang, Ming
    Tade, Moses
    Wang, Shaobin
    Date
    2012
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Ullah, R. and Sun, H. and Ang, M. and Tade, M. and Wang, S. 2012. Photocatalytic oxidation of water and air contaminants with metal doped BiTaO4 irradiated with visible light, in Busca, G. and Cavani, F. (ed), 7th International Symposium On Group Five Elements, May 8-11 2011, pp. 203-212. Riccione: Elsevier BV.
    Source Title
    Catalysis Today
    Source Conference
    7th International Symposium On Group Five Elements
    DOI
    10.1016/j.cattod.2012.03.041
    ISSN
    0920-5861
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/13694
    Collection
    • Curtin Research Publications
    Abstract

    Various metal ions (Al, Nd, La, Ga, Ba, Sn, W, Fe, Co, Cr, Ce, Cu, Sb, Pb, Ni, Ag) doped and undoped triclinic BiTaO 4 photocatalysts were synthesized using a solution method. The prepared materials were characterized with high resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and UV–vis diffuse reflectance spectroscopy. BiTaO 4 doped with various metal ions were tested for photocatalytic oxidation of water and air contaminants with both UV and visible light irradiation. Metal ion doping changed the photophysical properties, but did not alter the crystalline structure of BiTaO 4 . Enhanced photocatalytic oxidation of toluene in air was observed for dopants such as Al, Nd, La, Ga, Ba, Sn, W, Fe, Sb, Ag, while other metal ions like Cu, Ce, Co, Pb, and Ni induced a detrimental effect on the photocatalytic performance. BiTaO 4 doped with La, Ga and Nd catalysts showed much better and stable performance than TiO 2 in gaseous toluene oxidation with both UV and visible light. Some metal ion doped BiTaO 4 catalysts also have shown good performance in methylene blue degradation in water.

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