Electrophoresis of a charge-regulated sphere normal to an air-water interface

The Journal of Physical Chemistry. B
Peter TsaiEric Lee

Abstract

The electrophoresis of a charge-regulated sphere normal to an air-water interface is investigated theoretically. The charge-regulated surface considered here is the generalization of conventional constant surface potential and constant surface charge density situations and models excellently well biocolloids or particles coated with a thin film of polyelectrolytes. The thickness of the double layer surrounding the particle can be arbitrary. A pseudospectral method based on Chebyshev polynomials is employed to solve the governing electrokinetic equations. We found, among other things, that the electric potential on the particle surface is the most dominant factor in the determination of the eventual particle electrophoretic mobility. The larger the number of dissociated functional groups on the particle surface (N(s)), the higher the absolute surface potential of the particle and hence the larger the magnitude of the mobility. Moreover, the electric potential on the particle surface depends on both the concentration of dissociated hydrogen ions, [H(+)](0), and the concentration of electrolytes, κa, in the solution. If [H(+)](0) and/or κa are small, the bulk condition is advantageous to the dissociation reaction, yielding a highe...Continue Reading

References

Jul 12, 2001·Journal of Colloid and Interface Science·S. Usui, T. W. Healy
Apr 24, 2002·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·T Terao, T Nakayama
Feb 21, 2004·Science·Bruce C Garrett
Jan 22, 2005·Science·Jaya L MohananStephanie L Brock
Jul 27, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Jyh-Ping HsuChao-Chung Kuo
Apr 13, 2006·Chemical Reviews·Pavel Jungwirth, Douglas J Tobias
Dec 18, 2007·Electrophoresis·Jyh-Ping HsuMing-Hong Ku
Dec 22, 2007·Journal of Colloid and Interface Science·Yandong Gao, Dongqing Li
Feb 1, 2008·Physical Review Letters·Dominik Horinek, Roland R Netz
Mar 28, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Yongsuk Hong, Derick G Brown
Jul 4, 2008·Journal of Colloid and Interface Science·J P HsuAy Su
Dec 6, 2008·Journal of Colloid and Interface Science·James LouEric Lee
Apr 7, 2010·Physical Review Letters·Yan LevinAlexandre Diehl
Sep 30, 2010·Electrophoresis·Peter TsaiEric Lee

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Citations

Oct 24, 2012·Physical Chemistry Chemical Physics : PCCP·Hsuan-Pei Hsu, Eric Lee

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