Hydrothermal synthesis of cubic α-Fe2O3 microparticles using glycine: Surface characterization, reaction mechanism and electrochemical activity

C-Y Yin; M. Minakshi; D.E. Ralph; Z-T Jiang; Z. Xie; H. Guo

doi:10.1016/j.jallcom.2011.08.048

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Hydrothermal synthesis of cubic α-Fe2O3 microparticles using glycine: Surface characterization, reaction mechanism and electrochemical activity

Journal article

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Peer reviewed

Hydrothermal synthesis of cubic α-Fe2O3 microparticles using glycine: Surface characterization, reaction mechanism and electrochemical activity

C-Y Yin, M. Minakshi, D.E. Ralph, Z-T Jiang, Z. Xie and H. Guo

Journal of Alloys and Compounds, Vol.509(41), pp.9821-9825

2011

DOI: https://doi.org/10.1016/j.jallcom.2011.08.048

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Abstract

Cubic α-Fe2O3 (hematite) microparticles (side lengths = 0.3–1.3 μm) have been synthesized using glycine and ferric chloride via a simple one-step hydrothermal reaction. Their morphological, mineralogical and surface properties have been determined using scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffractometry (XRD) and X-ray photoelectron spectroscopy (XPS). XRD analysis indicated that the synthesized α-Fe2O3 microparticles were minerallogically pure. An increase in hydrothermal reaction duration from 10 to 24 h increased the atomic percentages of α-Fe2O3 on the surface of the microparticles by almost 8%. The mechanism concerning reactions of species to produce this microparticles precipitate was elucidated based on thermodynamics and ionic equilibrium aspects. In the electrochemical analysis, the synthesized α-Fe2O3 microparticles (as cathode material) exhibit an approximate charge capacity of 160 mAh/g and excellent coulombic efficiency of 94%.

Details

Title: Hydrothermal synthesis of cubic α-Fe2O3 microparticles using glycine: Surface characterization, reaction mechanism and electrochemical activity
Authors/Creators: C-Y Yin (Author/Creator) - Murdoch University
M. Minakshi (Author/Creator) - Murdoch University
D.E. Ralph (Author/Creator) - Murdoch University
Z-T Jiang (Author/Creator) - Murdoch University
Z. Xie (Author/Creator) - Edith Cowan University
H. Guo (Author/Creator) - Edith Cowan University
Publication Details: Journal of Alloys and Compounds, Vol.509(41), pp.9821-9825
Publisher: Elsevier
Identifiers: 991005541982507891
Copyright: 2011 Elsevier B.V.
Murdoch Affiliation: School of Chemical and Mathematical Science; School of Engineering and Energy
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration
Citation topics: 2 Chemistry; 2.67 Nanoparticles; 2.67.370 Magnetic Nanoparticles
Web Of Science research areas: Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
ESI research areas: Materials Science