Surface properties of ceria synthesised using Triton-X based reverse microemulsions |
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| Authors: | Polyxeni Paschalidou Charis R. Theocharis |
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| Affiliation: | Porous Solids Group, Department of Chemistry, University of Cyprus, P. O. Box 20537, 1678 Nicosia Cyprus, |
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| Abstract: | The effect of the tail length of Triton-X surfactants on the surface properties of ceria prepared by means of reversed micelles and Ce(OiPr)4 has been systematically studied. Generally, solids with increased surface areas (up to 136 m2 g−1) were synthesised. It was shown that the tail length strongly affects the surface characteristics. Further studies were carried out using UV-Vis, ATR-FTIR, XRD and TGA/DSC studies of the precursor gels as well as N2-isothermal adsorption BET, XRD, FT-IR, UV-Vis diffuse reflectance and SEM investigations of the final solids samples. An interaction mechanism between the ceria precursor molecules and the polar tail of the reversed Triton X micelles and the formation of ceria (CeO2) particles in the aqueous nucleus of the reversed microemulsions is proposed.The effect of the tail length of Triton-X surfactants on the surface properties of ceria prepared by means of reversed micelles and Ce(OiPr)4 has been systematically studied. |
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