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Bicontinuous nanodisc and nanospherical titania materials prepared by sol-gel process in reverse microemulsion

✍ Scribed by Khaled Haouemi; Fathi Touati; Néji Gharbi

Book ID
111491558
Publisher
Versita
Year
2012
Tongue
English
Weight
446 KB
Volume
66
Category
Article
ISSN
0366-6352

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✦ Synopsis

Abstract

TiO2 nanoparticles with different shapes and sizes were synthesised by the sol-gel route in Water/Brij78/Hexane reverse microemulsions. The aqueous cores of these microemulsions were used as nanoreactors to control sol-gel reactions. We studied the effect of water/surfactant mole ratio (W 0) on the morphology, and textural properties of the final products. The materials thus obtained were characterised by different techniques. Thermogravimetric and differential thermal analysis (TG-DTA) was used to study the thermal behaviour of the products and X-ray diffraction (XRD) to identify the crystalline phases. The morphological and textural properties of the products were determined by scattering electron microscopy (SEM) and the Brunauer-Emmett-Teller (BET) method, respectively. We also studied the influence of thermal treatment on the structure and size of the TiO2 particles. The effect of W 0 on the anatase-rutile phase transition temperature was investigated.

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