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.
|Book series||Journal of Physics: Conference Series (Online)|
|Publication status||Published - 2012|
|Event||Electron Microscopy and Analysis Group Conference (EMAG 2011) - Birmingham, United Kingdom|
Duration: 6 Sep 2011 → 9 Sep 2011
|Conference||Electron Microscopy and Analysis Group Conference (EMAG 2011)|
|Period||06/09/2011 → 09/09/2011|
Almeida, T. P., Fay, M. W., Zhu, Y., Hansen, T. W., Dunin-Borkowski, R. E., & Brown, P. D. (2012). Environmental TEM investigation of the reduction of α-Fe2O3 nanorods under H2 atmosphere. Journal of Physics: Conference Series (Online), 371(1), 012049. https://doi.org/10.1088/1742-6596/371/1/012049