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Preparation and characterization of ultrafine TiO2 particles in reverse micelles by hydrolysis of titanium di-ethylhexyl sulfosuccinate

Published online by Cambridge University Press:  31 January 2011

Manjari Lal ,
Vishal Chhabra ,
Pushan Ayyub  and
Amarnath Maitra
Manjari Lal
Affiliation:
Department of Chemistry, University of Delhi, Delhi 110 007, India
Vishal Chhabra
Affiliation:
Department of Chemistry, University of Delhi, Delhi 110 007, India
Pushan Ayyub
Affiliation:
Materials Research Group, Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay 400 005, India
Amarnath Maitra
Affiliation:
Department of Chemistry, University of Delhi, Delhi 110 007, India
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Abstract

We describe the synthesis and characterization of ultrafine TiO2 particles (in both anatase as well as rutile form) produced by a chemical reaction within the aqueous core of a water-in-oil microemulsion. The microemulsion was stabilized and the Ti4+ ions provided by a functionalized surfactant derived from the commercially available Aerosol-OT, i.e., sodium bis (2-ethylhexyl) sulfosuccinate (Na-DEHSS). The Na+ ions in Aerosol-OT were completely replaced by Ti4+ through an ion-exchange reaction in nonaqueous solvents. Ultrafine TiO2 particles were produced by the hydrolysis of the Ti-containing surfactant in the water droplets. The dependence of the size of the precipitated TiO2 · xH2O particles on various structure parameters of the microemulsion was studied in detail.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 5 , May 1998 , pp. 1249 - 1254
Copyright
Copyright © Materials Research Society 1998

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