Use of ethylene oxide in the sol–gel synthesis of α-Fe2O3 nanoparticles from Fe(iii) salts
- 11 April 2002
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 12 (6) , 1676-1683
- https://doi.org/10.1039/b200773h
Abstract
α-Fe2O3 nanoparticles were prepared by the sol–gel process with ethylene oxide (EO) and FeCl3 as starting materials. The influences of the molar ratio of EO to Cl−, the concentration of FeCl3, the volume percentage of ethanol and heat treatment on the structural properties of the α-Fe2O3 nanoparticles were investigated by XRD, TEM and SAXS (small angle X-ray scattering) techniques. It was found that the mean size of the α-Fe2O3 nanoparticles formed via the sol–gel process is smaller than those formed via the sol process. The values of the mass fractal dimension (Dm) for the α-Fe2O3 nanoparticles formed via the sol and sol–gel processes are 2 < Dm < 3 and 3 < Dm < 4, respectively.Keywords
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