Issue 5, 2003

Synthesis of titania hollow microspheres using non-aqueous emulsions

Abstract

Hollow titania microspheres ranging from 100 nm to a few micrometres in diameter were synthesized by a novel method using surfactant-stabilized non-aqueous emulsion droplets. Well-defined micron-sized hollow spheres with amorphous titania walls typically 50 nm thick were prepared by addition of water to formamide dispersions of hexadecane droplets containing titanium ethoxide. In contrast, addition of titanium ethoxide to formamidewater droplets dispersed in hexadecane produced hollow spheres of amorphous titania only 100 nm in diameter. In both cases, hydrolysis/condensation reactions at the formamide/oil interface gave rise to intact shells that could have uses as low density pigments, dyes, self-repairing coatings, photoactive storage/release agents, as well as compartmentalized structures in nanotechnology.

Graphical abstract: Synthesis of titania hollow microspheres using non-aqueous emulsions

Article information

Article type
Paper
Submitted
29 Jan 2003
Accepted
06 Mar 2003
First published
27 Mar 2003

J. Mater. Chem., 2003,13, 1112-1114

Synthesis of titania hollow microspheres using non-aqueous emulsions

A. M. Collins, C. Spickermann and S. Mann, J. Mater. Chem., 2003, 13, 1112 DOI: 10.1039/B301183F

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