Journal of the Korean Physical Society

Korean Physical Society (한국물리학회)
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Electrostatic Adsorption of Uniformly Charged Electrolytes within Like-charged Electrodes

  • Jang, Seanea (Department of Physics, Andong National University) ;
  • Shin, Ghi Ryang (Department of Physics, Andong National University) ;
  • Kim, Soon-Chul (Department of Physics, Andong National University)
  • Received : 2018.04.03
  • Accepted : 2018.05.24
  • Published : 2018.11.15
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Abstract

The classical-fluids density functional theory has been developed for studying the structural and the electrical properties of electrolyte solutions containing uniformly charged hard-spherical ions. The modified fundamental-measure theory has been used to evaluate the hard-sphere contribution. The mean-field approximation has been employed to calculate the cross correlation between the hard sphere contribution and the Coulomb interaction. The Poisson equation for ions carrying charges that are spatially separated has been solved. The present theory shows reasonably good agreement with the corresponding Monte Carlo simulation results. The calculated results show that the attraction between like-charged planar surfaces is the result of the intra-ionic correlation and depends strongly on the ion size, valence, mole fraction, and charge distribution of electrolytes.

Keywords

Acknowledgement

Supported by : Andong National University

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