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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/5966

Title: Synthesis, characterization, and growth mechanism of α-Cr2O3 monodispersed particles
Authors: Khamlich, S
Manikandan, E
Ngoma, BD
Sithole, J
Nemraoui, O
Zorkani, I
McCrindle, R
Cingo, N
Maaza, M
Keywords: Chromium monodispersed spherical particles
Chromium oxide
Aqueous Chemical Growth
ACG
X-ray diffraction
XRD
Scanning Electron Microscopy
SEM
Raman spectroscopy
Issue Date: Jun-2011
Publisher: Elsevier
Citation: Khamlich, S, Manikandan, E, Ngoma, BD, Sithole, J, Nemraoui, O, Zorkani, I, McCrindle, R, Cingo, N and Maaza, M. 2011. Synthesis, characterization, and growth mechanism of α-Cr2O3 monodispersed particles. Journal of Physics and Chemistry of Solids, vol. 72(6), pp 714-718
Series/Report no.: Workflow;8784
Abstract: Monodispersed spherical particles of chromium (III) oxide, α-Cr2O3, were successfully synthesized from a diluted solution of KCr(SO4)2·12H2O using the Aqueous Chemical Growth (ACG) technique. The spherical α-Cr2O3 particles obtained were characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), and Raman spectroscopy for structural, surface morphological, chemical, and physical properties, as a function of deposition time. The XRD and Raman spectroscopy showed that aging had no apparent effect on the structure of the obtained uniform fine (in the range of micron–nano-level)-spherical particles of α-Cr2O3. The use of SEM demonstrated that aging had a clear influence on the size and the particles size distribution. Accordingly, the time dependence of the average diameter of α-Cr2O3 spherical particles follows the d3 law as required for diffusion-limited Ostwald ripening.
Description: Copyright: 2011 Elsevier. This is an ABSTRACT ONLY.
URI: http://www.sciencedirect.com/science/article/pii/S0022369711000485
http://hdl.handle.net/10204/5966
ISSN: 0022-3697
Appears in Collections:Laser physics and technology
General science, engineering & technology

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