Ferricoxychloride and Hematite Nanoparticles: Synthesis and Phase Transformation

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A synthetic procedure based on thermal hydrolysis of iron(III) chloride solutions for the preparation of hematite (α-Fe2O3) and ferricoxychloride (FeOCl) colloids consisting of nanoparticles (NPs) is described. Transmission electron microscopy indicated that both colloids consisted of particles smaller than 10 nm. X-ray diffraction measurements revealed transformation of FeOCl NPs into α-Fe2O3 NPs after a few months. The phase transformation was explained in terms of redissolution – recrystallization process. UV-vis spectroscopy was used for precise determination of the band gap of α-Fe2O3.

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Periodical:

Edited by:

Dragan P. Uskokovic, Slobodan K. Milonjic and Dejan I. Rakovic

Pages:

63-66

DOI:

10.4028/www.scientific.net/MSF.518.63

Citation:

M. Marinović-Cincović et al., "Ferricoxychloride and Hematite Nanoparticles: Synthesis and Phase Transformation ", Materials Science Forum, Vol. 518, pp. 63-66, 2006

Online since:

July 2006

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$35.00

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