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Synthesis, characterization and growth mechanism of α-Cr2O3 mono-dispersed particles

Khamlich, Saleh (2011) Synthesis, characterization and growth mechanism of α-Cr2O3 mono-dispersed particles. Journal of Physics and Chemistry of Solids , 72 . pp. 714-718.

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Abstract

Monodispersed spherical particles of Chromium (III) Oxide, α-Cr2O3, were successfully synthesized from a diluted solution of KCr(SO4)2.12 H2O 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 morphology, chemical and physical properties, as a function of deposition time. The XRD and Raman spectroscopy showed that ageing had no apparent effect on the structure of the obtained uniform fine (in the range of micron to nano level)-spherical particles of α-Cr2O3. The use of SEM demonstrated that ageing had a clear influence on the size and the particles size distribution. Accordingly, the time dependence of the average diameter of α-Cr2O3spherical particles follows the d3 law as required for diffusion-limited Ostwald ripening.

Item Type:Article
Subjects:Material Science > Nanochemistry
Material Science > Nanostructured materials
ID Code:11822
Deposited By:Mr Saleh Khamlich
Deposited On:20 May 2012 03:03
Last Modified:20 May 2012 03:04

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