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Surface properties of ceria synthesised using Triton-X based reverse microemulsions

Author:
Paschalidou, Polyxeni, Theocharis, Charis R.
Source:
RSC advances 2019 v.9 no.12 pp. 7025-7031
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy, X-ray diffraction, adsorption, ceric oxide, differential scanning calorimetry, emulsions, gels, micelles, reflectance, scanning electron microscopy, surfactants, thermogravimetry, ultraviolet-visible spectroscopy
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.
Agid:
6316364