Formation of TiO2 nanoparticles in water-in-CO2 microemulsions

Kwon Taek Lim; Ha Soo Hwang; Man Sig Lee; Gun Dae Lee; Seong-Soo Hong; Keith P. Johnston

doi:10.1039/B203740H

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Formation of TiO₂nanoparticles in water-in-CO₂ microemulsions

Kwon Taek Lim,*^a Ha Soo Hwang,^a Man Sig Lee,^b Gun Dae Lee,^b Seong-Soo Hong^b and Keith P. Johnston^c

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* Corresponding authors

^a Division of Image and Information Engineering, Pukyong National University, Pusan 608-739, Korea
E-mail: ktlim@pknu.ac.kr

^b Division of Chemical Engineering, Pukyong National University, Pusan 608-739, Korea

^c Department of Chemical Engineering, The University of Texas at Austin, Texas 78712, USA

Abstract

Titanium dioxide nanoparticles can be produced by the controlled hydrolysis of titanium tetraisopropoxide in water-in-CO₂ (w/c) microemulsions stabilized with the surfactants ammonium carboxylate perfluoropolyether (PFPE-NH₄) and poly(dimethyl amino ethyl methacrylate-block-1H,1H,2H,2H-perfluorooctyl methacrylate) (PDMAEMA-b-PFOMA); the greater control of hydrolysis and particle growth with PDMAEMA-b-PFOMA is consistent with the differences in the stabilities and interactions for these two microemulsions.

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Article information

DOI: https://doi.org/10.1039/B203740H
Article type: Communication
Submitted: 18 Apr 2002
Accepted: 05 Jun 2002
First published: 20 Jun 2002

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Chem. Commun., 2002, 1528-1529

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Formation of TiO₂ nanoparticles in water-in-CO₂ microemulsions

K. Taek Lim, H. Soo Hwang, M. Sig Lee, G. Dae Lee, S. Hong and K. P. Johnston, Chem. Commun., 2002, 1528 DOI: 10.1039/B203740H

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