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

doi:10.1088/1742-6596/371/1/012049

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 journal › Conference article › Research › peer-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 language	English
Book series	Journal of Physics: Conference Series (Online)
Volume	371
Issue number	1
Pages (from-to)	012049
ISSN	1742-6596
DOIs	https://doi.org/10.1088/1742-6596/371/1/012049
Publication status	Published - 2012
Event	Electron Microscopy and Analysis Group Conference (EMAG 2011) - Birmingham, United Kingdom Duration: 6 Sept 2011 → 9 Sept 2011 http://www.emag-iop.org

Conference

Conference	Electron Microscopy and Analysis Group Conference (EMAG 2011)
Country/Territory	United Kingdom
City	Birmingham
Period	06/09/2011 → 09/09/2011
Internet address	http://www.emag-iop.org

Access to Document

10.1088/1742-6596/371/1/012049

OpenUrl availability

Full text

Cite this

@inproceedings{9f6105e9f1f74ee292935627743d988a,

title = "Environmental TEM investigation of the reduction of α-Fe2O3 nanorods under H2 atmosphere",

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.",

author = "Almeida, \{Trevor P.\} and Fay, \{Michael W.\} and Yanqiu Zhu and Hansen, \{Thomas Willum\} and Dunin-Borkowski, \{Rafal E.\} and Brown, \{Paul D.\}",

year = "2012",

doi = "10.1088/1742-6596/371/1/012049",

language = "English",

volume = "371",

pages = "012049",

journal = "Journal of Physics: Conference Series (Online)",

issn = "1742-6596",

publisher = "IOP Publishing",

number = "1",

note = "Electron Microscopy and Analysis Group Conference (EMAG 2011) ; Conference date: 06-09-2011 Through 09-09-2011",

url = "http://www.emag-iop.org",

}

TY - GEN

T1 - Environmental TEM investigation of the reduction of α-Fe2O3 nanorods under H2 atmosphere

AU - Almeida, Trevor P.

AU - Fay, Michael W.

AU - Zhu, Yanqiu

AU - Hansen, Thomas Willum

AU - Dunin-Borkowski, Rafal E.

AU - Brown, Paul D.

PY - 2012

Y1 - 2012

N2 - 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.

AB - 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.

U2 - 10.1088/1742-6596/371/1/012049

DO - 10.1088/1742-6596/371/1/012049

M3 - Conference article

SN - 1742-6596

VL - 371

SP - 012049

JO - Journal of Physics: Conference Series (Online)

JF - Journal of Physics: Conference Series (Online)

IS - 1

T2 - Electron Microscopy and Analysis Group Conference (EMAG 2011)

Y2 - 6 September 2011 through 9 September 2011

ER -