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    Titanate supported cobalt catalysts for photochemical oxidation of phenol under visible light irradiations

    Access Status
    Fulltext not available
    Authors
    Zhou, Guanliang
    Sun, Hongqi
    Wang, Shaobin
    Ang, Ha Ming
    Tade, Moses
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Zhou, Guanliang and Sun, Hongqi and Wang, Shaobin and Ang, H. Ming and Tade, Moses O. 2011. Titanate supported cobalt catalysts for photochemical oxidation of phenol under visible light irradiations. Separation and Purification Technology. 80: pp. 626-634.
    Source Title
    Separation and Purification Technology
    DOI
    10.1016/j.seppur.2011.06.021
    ISSN
    13835866
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/3972
    Collection
    • Curtin Research Publications
    Abstract

    Three metal titanates, ZnTiO3 (Zn), FeTiO3 (Fe) and Bi4Ti3O12 (Bi), were employed to prepare supported cobalt catalysts for photocatalytic and photochemical oxidation of phenol with peroxymonosulphate (PMS) or peroxydisulphate (PDS) under visible light irradiations. It was found that the oxidation efficiencies varied greatly due to the different photochemical behaviours of various supports. Using PMS, both Co(5%)/Zn and Co(3%)/Bi achieved complete degradation of phenol in 120 min, as compared to 66.9% of phenol removal on Co(5%)/Fe in 150 min. However, those catalysts were found not efficient in activation of PDS. Co(5%)/Bi, as the best catalyst, provided only 66.9% of phenol degradation in 150 min. The effects of the supports were related to the varying photophysical properties and the interactions with loaded Co3O4. The stability of Co(5%)/Zn with PMS was further investigated and it was found that 85.4% of the activity could be retained in phenol degradation in the fourth run.

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