Influence of Hydrogen Peroxide in the Preparation of Nanocrystalline Ceria

Influence of Hydrogen Peroxide in the Preparation of Nanocrystalline Ceria

The influence of H2O2 in the preparation of nanocrystalline CeO2 has been investigated by treating solutions of Ce(III) with NaOH in the presence of different concentrations of H2O2. The resulting precipitated material was then examined by a range of techniques, including transmission electron micro...

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Veröffentlicht in:Chemistry of materials 2007-05, Vol.19 (9), p.2321-2328
Hauptverfasser: Scholes, F. H, Hughes, A. E, Hardin, S. G, Lynch, P, Miller, P. R
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container_issue 9
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creator Scholes, F. H
Hughes, A. E
Hardin, S. G
Lynch, P
Miller, P. R
description The influence of H2O2 in the preparation of nanocrystalline CeO2 has been investigated by treating solutions of Ce(III) with NaOH in the presence of different concentrations of H2O2. The resulting precipitated material was then examined by a range of techniques, including transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). A decrease in CeO2 crystallite size with increasing H2O2 concentration was observed. This was found to be associated with the formation of an amorphous material containing an η2-peroxide (O2 2-) species.
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