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    High temperature diffraction study of in-situ crystallization of nanostructured TiO2 photocatalysts

    189563_66679_198_48_2__JACS_Low.pdf (466.7Kb)
    Access Status
    Open access
    Authors
    Low, It Meng
    Curtain, Ben
    Philipps, M.
    Liu, Z.
    Ionescu, M.
    Date
    2012
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Low, J.M. and Curtain, B. and Philipps, M. and Liu, Z.Q. and Ionescu, M. 2012. High temperature diffraction study of in-situ crystallization of nanostructured TiO2 photocatalysts. Journal of the Australian Ceramic Society. 48 (2): pp. 198-204.
    Source Title
    Journal of the Australasian Ceramic Society
    Additional URLs
    http://www.austceram.com/_literature_103084/Vol_48-2-198_Low_ACS_Paper
    ISSN
    10186689
    URI
    http://hdl.handle.net/20.500.11937/45287
    Collection
    • Curtin Research Publications
    Abstract

    The in-situ crystallization of anatase and rutile on chemically-treated Ti-foils in the temperature range 20-900ºC has been investigated using synchrotron radiation diffraction and x-ray diffraction. The processing methodology has a profound influence on the morphology, crystallite size and growth rate of nanostructured TiO2. The anatase formed was metastable and transformed to rutile at ~800ºC. Increasing the temperature from 400 to 900ºC caused the sharpening of anatase (101) peaks and resulted in a concomitant coarsening in crystallite size. The surface of annealed samples exhibited TiO2 nanorods, nanowires or nanotubes depending on the processing method. Ion-beam analysis has indicated the existence of composition gradation within the annealed TiO2 samples at the near-surface.

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