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    Incorporation of Molybdate Anion into -FeOOH

    Access Status
    Fulltext not available
    Authors
    Carroll, Dale
    Richmond, William
    Date
    2008
    Type
    Journal Article
    
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    Citation
    Carroll, Dale and Richmond, William. 2008. Incorporation of Molybdate Anion into -FeOOH. American Mineralogist 93: pp. 1641-1646.
    Source Title
    American Mineralogist
    ISSN
    0003004X
    School
    Nanochemistry Research Institute (Research Institute)
    URI
    http://hdl.handle.net/20.500.11937/21523
    Collection
    • Curtin Research Publications
    Abstract

    An analogue of -FeOOH (akaganite) containing structurally-incorporated molybdate has beensynthesized and the conditions for its formation have been studied in the presence of chloride, sulfateand nitrate anions. The incorporation of molybdate into the -FeOOH structure has been shown togreatly increase the stability of this phase with respect to its transformation to hematite at elevatedtemperature. Molybdate incorporation has also been shown to change the particle morphology, withincreasing amounts of molybdate causing the rod-shaped nanoparticles to become progressively shorteruntil spherical nanocrystals are observed. The combined observations of increased stability, morphologychanges and measured levels of incorporated molybdenum suggest that although inclusion of molybdateanions into the -FeOOH tunnel sites is possible, it is unlikely to be the only mode of molybdateincorporation.

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