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    Alignment of Amorphous Iron Oxide Clusters: A Non-Classical Mechanism for Magnetite Formation

    Access Status
    Fulltext not available
    Authors
    Sun, S.
    Gebauer, Denis
    Cölfen, H.
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Sun, S. and Gebauer, D. and Cölfen, H. 2017. Alignment of Amorphous Iron Oxide Clusters: A Non-Classical Mechanism for Magnetite Formation. Angewandte Chemie - International Edition. 56 (14): pp. 4042-4046.
    Source Title
    Angewandte Chemie - International Edition
    DOI
    10.1002/anie.201610275
    ISSN
    1433-7851
    School
    Department of Chemistry
    URI
    http://hdl.handle.net/20.500.11937/51961
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, WeinheimDespite numerous studies on the nucleation and crystallization of iron (oxyhydr)oxides, the roles of species developing during the early stages, especially primary clusters and intermediate amorphous particles, are still poorly understood. Herein, both ligand-free and ligand-protected amorphous iron oxide (AIO) clusters (<2 nm) were synthesized as precursors for magnetite formation. Thermal annealing can crystallize the clusters into magnetite particles, and AIO bulk phases with domains of pre-aligned clusters are found to be direct precursors to crystals, suggesting a non-classical aggregation-based pathway that differs from the reported oriented attachment or particle accretion mechanisms.

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