In situ TEM investigation of β-FeOOH and α-Fe2O3 nanorods

Almeida, T. P. , Fay, M. W., Zhu, Y. and Brown, P. D. (2012) In situ TEM investigation of β-FeOOH and α-Fe2O3 nanorods. Physica E: Low-Dimensional Systems and Nanostructures, 44(6), pp. 1058-1061. (doi:10.1016/j.physe.2011.01.016)

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Abstract

The investigation of rapidly quenched β-FeOOH and α-Fe2O3 hydrothermal synthesis reaction products, heat treated in situ within a transmission electron microscope, provide direct evidence for the hydrothermal growth mechanism of lenticular α-Fe2O3 nanorods. The transformation of β-FeOOH nanorods into α-Fe2O3 nanoparticles during in situ heating is consistent with the release of Fe3+ ions through β-FeOOH dissolution to supply and promote α-Fe2O3 nucleation and growth. Coarsening of the tips of α-Fe2O3 nanorods through the consumption and coalescence of α-Fe2O3 nanoparticles provides evidence for the hydrothermal growth mechanism of oriented attachment and agglomeration of primary α-Fe2O3 nanoparticles into single crystalline lenticular α-Fe2O3 nanorods.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Almeida, Dr Trevor
Authors: Almeida, T. P., Fay, M. W., Zhu, Y., and Brown, P. D.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physica E: Low-Dimensional Systems and Nanostructures
Publisher:Elsevier BV
ISSN:1386-9477
ISSN (Online):1873-1759

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