Environmental TEM investigation of the reduction of α-Fe2O3 nanorods under H2 atmosphere

Trevor P. Almeida, Michael W. Fay, Yanqiu Zhu, Thomas Willum Hansen, Rafal E. Dunin-Borkowski, Paul D. Brown

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    The thermal reduction of hydrothermally synthesised α-Fe2O3 nanorods (NRs) to Fe3O4 NRs under hydrogen is investigated. Complete reduction of α-Fe2O3 NRs to Fe3O4 NRs was achieved during in situ XRD under 1 bar H2 atmosphere at 360°C. Complementary environmental transmission electron microscope investigation at high resolution, during in situ heating under an H2 pressure of 5 mbar at 500°C, provided evidence for the very first stages of transformation, supporting a model for the migration of oxygen along favoured α-Fe2O3 lattice planes during the templated thermal reduction of α-Fe2O3 NRs to Fe3O4 NRs.
    Original languageEnglish
    Book seriesJournal of Physics: Conference Series (Online)
    Volume371
    Issue number1
    Pages (from-to)012049
    ISSN1742-6596
    DOIs
    Publication statusPublished - 2012
    EventElectron Microscopy and Analysis Group Conference (EMAG 2011) - Birmingham, United Kingdom
    Duration: 6 Sep 20119 Sep 2011
    http://www.emag-iop.org

    Conference

    ConferenceElectron Microscopy and Analysis Group Conference (EMAG 2011)
    CountryUnited Kingdom
    CityBirmingham
    Period06/09/201109/09/2011
    Internet address

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