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Synthesis and growth of hematite nanodiscs through a facile hydrothermal approach

Jiang, X. C., Yu, A. B., Yang, W. R., Ding, Y., Xu, C. X. and Lam, S. 2010, Synthesis and growth of hematite nanodiscs through a facile hydrothermal approach, Journal of nanoparticle research, vol. 12, no. 3, pp. 877-893, doi: 10.1007/s11051-009-9636-8.

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Title Synthesis and growth of hematite nanodiscs through a facile hydrothermal approach
Author(s) Jiang, X. C.
Yu, A. B.
Yang, W. R.ORCID iD for Yang, W. R. orcid.org/0000-0001-8815-1951
Ding, Y.
Xu, C. X.
Lam, S.
Journal name Journal of nanoparticle research
Volume number 12
Issue number 3
Start page 877
End page 893
Total pages 17
Publisher Springer
Place of publication Dordrecht , The Netherlands
Publication date 2010-03
ISSN 1388-0764
1572-896X
Keyword(s) hematite nanoparticles
nanodiscs
hydrothermal synthesis
Summary This study reports a facile hydrothermal method for the synthesis of monodispersed hematite (α-Fe2O3) nanodiscs under mild conditions. The method has features such as no use of surfactants, no toxic precursors, and no requirements of high-temperature decomposition of iron precursors in non-polar solvents. By this method, α-Fe2O3 nanodiscs were achieved with diameter of 50 ± 10 nm and thickness of ~6.5 nm by the hydrolysis of ferric chloride. The particle characteristics (e.g., shape, size, and distribution) and functional properties (e.g., magnetic and catalytic properties) were investigated by various advanced techniques, including TEM, AFM, XRD, BET, and SQUID. Such nanodiscs were proved to show unique magnetic properties, i.e., superparamagnetic property at a low temperature (e.g., 20 K) but ferromagnetic property at a room temperature (~300 K). They also exhibit low-temperature (<623 K) catalytic activity in CO oxidation because of extremely clean surfaces due to non-involvement of surfactants, compared with those spheres and ellipsoids capped by PVP molecules.
Language eng
DOI 10.1007/s11051-009-9636-8
Field of Research 100703 Nanobiotechnology
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2010, Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30035134

Document type: Journal Article
Collection: Institute for Technology Research and Innovation
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