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    Comparative investigation of photocatalytic degradation of toluene on Nitrogen doped Ta2O5 and Nb2O5 nanoparticles

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    Fulltext not available
    Authors
    Ullah, Ruh
    Sun, Hongqi
    Ang, Ha Ming
    Tade, Moses
    Wang, Shaobin
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Ullah, Ruh and Sun, Hongqi and Ang, Ha Ming and Tade, Moses O. and Wang, Shaobin. 2013. Comparative investigation of photocatalytic degradation of toluene on Nitrogen doped Ta2O5 and Nb2O5 Nanoparticles. Industrial & Engineering Chemistry Research. 52 (9): pp. 3320-3328.
    Source Title
    Industrial & Engineering Chemistry Research
    DOI
    10.1021/ie302326h
    ISSN
    0888-5885
    URI
    http://hdl.handle.net/20.500.11937/40856
    Collection
    • Curtin Research Publications
    Abstract

    Nb2O5 and Ta2O5 nanoparticles were prepared at a moderate sintering temperature of 700 °C using a solution method. Nitrogen doped Nb2O5 and Ta2O5 were obtained by ammonia gas treatment at 700 °C. The materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and UV-vis diffuse reflectance spectroscopy. All the materials were used for photocatalytic decomposition of gaseous toluene irradiated with artificial solar light and pure visible light. Most of the materials were multiple crystallites with orthorhombic and monoclinic structures. Tantalum based compounds, undoped (Ta2O5 (lab)) and nitrogen doped (Ta2O5:N (lab)), have shown much better performance than niobium based materials. Ta2O5:N (lab) decomposed gaseous toluene with a rate similar to those of Ta2O5 (lab) and Ta2O5:N (com) in the initial 60 min but at a higher rate at extended time under artificial sunlight. Ta2O5:N (lab) decomposed about 70% toluene with artificial sunlight and 30% with pure visible light (lambda = 400 nm). The material also exhibited a very stable performance with artificial sunlight and pure visible light.

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