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

Almeida, T. P. , Fay, M. W., Zhu, Y., Hansen, T. W., Dunin-Borkowski, R. and Brown, P. D. (2012) Environmental TEM investigation of the reduction of α-Fe2O3 nanorods under H2 atmosphere. Journal of Physics: Conference Series, 371, 012049. (doi:10.1088/1742-6596/371/1/012049)

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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.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Almeida, Dr Trevor
Authors: Almeida, T. P., Fay, M. W., Zhu, Y., Hansen, T. W., Dunin-Borkowski, R., and Brown, P. D.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of Physics: Conference Series
Publisher:Institute of Physics Publishing Ltd.
ISSN:1742-6596
ISSN (Online):1742-6596

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