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    Fabrication and surface photovoltage study of hematite microparticles with hollow spindle-shaped structure

    Access Status
    Fulltext not available
    Authors
    Li, H.
    Zhao, Q.
    Li, Xin Yong
    Shi, Y.
    Chen, G.
    Date
    2012
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Li, H. and Zhao, Q. and Li, X.Y. and Shi, Y. and Chen, G. 2012. Fabrication and surface photovoltage study of hematite microparticles with hollow spindle-shaped structure. Applied Surface Science. 258 (18): pp. 7099-7104.
    Source Title
    Applied Surface Science
    DOI
    10.1016/j.apsusc.2012.04.006
    ISSN
    0169-4332
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/10834
    Collection
    • Curtin Research Publications
    Abstract

    Hematite (a-Fe 2O 3) particles with hollow spindle-shaped microstructure were successfully synthesized by a one-pot hydrothermal approach in large scale. The structural properties of the sample were systematically investigated by X-ray powder diffraction, scanning electron microscopy, energy-dispersive X-ray spectrum, high resolution transmission electron microscopy, selected-area electron diffraction techniques, UV-vis diffuse reflectance spectroscopy and infrared spectroscopy techniques. The characterization results revealed that the a-Fe 2O 3 microparticles with a single-domain crystalline structure was mainly grown along the (1 0 4) crystal plane. The valence states and the surface chemical compositions of a-Fe 2O 3 were further identified by X-ray photoelectron spectroscopy. The feature of photo-induced charge separation on spectrum was demonstrated by the surface photovoltage measurement under different external biases. The observed photoelectric characteristics of the as-fabricated material are beneficial for various optical and electronic applications. © 2012 Elsevier B.V.

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