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    Study of the photocatalytic activity of anatase TiO2 nano-microstructures with exposed {001} facets

    Access Status
    Fulltext not available
    Authors
    Sofianos, Veronica
    Vaimakis, T.
    Trapalis, C.
    Date
    2013
    Type
    Conference Paper
    
    Metadata
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    Citation
    Sofianos, V. and Vaimakis, T. and Trapalis, C. 2013. Study of the photocatalytic activity of anatase TiO2 nano-microstructures with exposed {001} facets. 5 (4): pp. 461-465.
    Source Title
    Nanoscience and Nanotechnology Letters
    DOI
    10.1166/nnl.2013.1556
    ISSN
    1941-4900
    School
    Department of Physics and Astronomy
    URI
    http://hdl.handle.net/20.500.11937/50232
    Collection
    • Curtin Research Publications
    Abstract

    TiO2 anatase nanoplates, hollow microspheres and microcrystals with exposed {001} crystal facets were fabricated via a solvothermal- hydrothermal method at 180 °C for 24 hours using titanium isopropoxide or titanium tetrafluoride as a titanium precursor, ethanol or distilled water as a solvent and lastly hydrofluoric acid as the enhancer for the formation of the TiO2 anatase {001} crystal facets. All samples were calcined at 600 °C in order to remove the fluoride atoms adsorbed on the photocatalysts surface. This paper presents the influence of different TiO2 anatase structures in their photocatalytic activity. The photocatalytic evaluation of all TiO2 anatase structures with exposed {001} crystal facets was obtained by oxidizing the NO gas to NO2 and NO3- and then calculating their photonic efficiency. Commercial TiO 2 photocatalyst P25 by Evonik Degussa was used as a reference. The TiO2 anatase nanoplates were the structure that exhibited the best photocatalytic activity of all TiO2 anatase structures, including the used reference P25 by Evonik Degussa.

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