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    A novel synthesis route for brookite rich titanium dioxide photocatalyst involving organic intermediate

    Access Status
    Fulltext not available
    Authors
    Manjumol, K.
    Jayasankar, M.
    Vidya, K.
    Mohamed, A.
    Nair, Balagopal
    Warrier, K.
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Manjumol, K. and Jayasankar, M. and Vidya, K. and Mohamed, A. and Nair, B. and Warrier, K. 2014. A novel synthesis route for brookite rich titanium dioxide photocatalyst involving organic intermediate. Journal of Sol-Gel Science and Technology. 73 (1): pp. 161-170.
    Source Title
    Journal of Sol-Gel Science and Technology
    DOI
    10.1007/s10971-014-3507-1
    ISSN
    0928-0707
    School
    Nanochemistry Research Institute
    URI
    http://hdl.handle.net/20.500.11937/38439
    Collection
    • Curtin Research Publications
    Abstract

    © 2014, Springer Science+Business Media New York.High temperature stable brookite rich titanium dioxide of average crystallite size 20 nm has been prepared by a novel aqueous sol–gel method involving hydroxyethyl cellulose polymer (HEC) as an organic intermediate, wherein titania powder with brookite phase content as high as 44 wt% was obtained. The existence of brookite phase has been evident even after calcination of the samples at 900 °C, which also helped to maintain a specific surface area value of 5.5 m2g-1 compared to the surface area of 2.2 m2g-1 measured on pure titania sample with only rutile phase. The brookite rich titania exhibited superior photocatalytic activity under UV irradiation with a rate constant value of 0.011 min-1 compared to the value of 0.003 min-1 measured for pure rutile phase rich titania samples under similar conditions. The present study indicates that HEC assisted thermal decomposition can be an effective route to produce efficient photoactive brookite rich titania powders.

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