Formation of TiO2 nanoparticles in water-in-CO2 microemulsions |
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Authors: | Lim Kwon Taek Hwang Ha Soo Lee Man Sig Lee Gun Dae Hong Seong-Soo Johnston Keith P |
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Institution: | Division of Image and Information Engineering, Pukyong National University, Pusan 608-739, Korea. ktlim@pknu.ac.kr |
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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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