ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Bicontinuous nanodisc and nanospherical titania materials prepared by sol-gel process in reverse microemulsion
Khaled Haouemi, Fathi Touati, and Néji Gharbi
Chemistry Laboratory of Condensed Materials, Preparatory Institute of Engineering School of Tunis, 2 Jawaher Lel Nehru Street, Montfleury, 1089 Tunis, Tunisia
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.
Keywords: sol-gel – microemulsion – nanodiscs – nanospheres – mesoporous
Full paper is available at www.springerlink.com.
Chemical Papers 66 (3) 202–210 (2012)