Abstract
The hydrodynamic diameter and electrophoretic mobility of titania nanoparticles in AOT microemulsions are studied depending on their water content (from 0 to 1.5 vol %), chloroform content in n-decane–chloroform mixture (from 0 to 30 vol %) and temperature (from 0 to 60°C). Considerable changes in diameter (from 20 to 400 nm) are detected upon adding water to the microemulsion. The electrophoretic mobility grows by 2–3 times upon adding chloroform, or as the temperature falls. The observed features allow us to halve the time of electrophoretic concentration for 140 nm TiO2 nanoparticles, and to concentrate 14 nm nanoparticles that do not exhibit electrophoretic mobility in the absence of chloroform.
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Original Russian Text © N.O. Shaparenko, D.I. Beketova, M.G. Demidova, A.I. Bulavchenko, 2018, published in Zhurnal Fizicheskoi Khimii, 2018, Vol. 92, No. 5, pp. 775–781.
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Shaparenko, N.O., Beketova, D.I., Demidova, M.G. et al. Effect of AOT Microemulsion Composition on the Hydrodynamic Diameter and Electrophoretic Mobility of Titanium Oxide Nanoparticles. Russ. J. Phys. Chem. 92, 948–954 (2018). https://doi.org/10.1134/S0036024418050278
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DOI: https://doi.org/10.1134/S0036024418050278