Interaction between small particles in an electrolyte solution

Authors

  • Сергей Владимирович Шостак National University of Life and Environmental Science of Ukraine, Heroyiv Oborony Str., 15, Kyiv, Ukraine, 03041, Ukraine
  • Наталия Григорьевна Шкода Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine General Naumov Str., 17, Kyiv, Ukraine, 03164, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2014.26433

Keywords:

Derjaguin-Landau-Verwey-Overbeek theory, Debye-Huckel equation, small particles, energy of interaction

Abstract

In studying ion-electrostatic interactions in systems of small particles in electrolyte solutions, the main task is to calculate the energy and forces of interaction that occur between the particles. This problem is closely related to the problem of finding the surface energy of double layers in the interaction of particles in such media. Starting with the works of B.V. Derjaguin, this problem is paid much attention, moreover, it is relevant up to the present time, especially when considering the interaction of small inorganic particles with biological cells or microorganisms. Interaction of diffuse double surface layers, appearing around the particles, is usually calculated based on the method of zones of B.V.Derjaguin. But using this approximation can lead to incorrect results.

The solution of the Debye-Huckel equations for a system of spherical particles with arbitrary radii and surface charges or potentials, located in the electrolyte was constructed in the paper. A general theoretical method for calculating the interaction of the particles in such systems was developed. Practically important two-particle case was considered in detail. From the general relations in the zero approximation, analytical formulas for finding the energy of interaction between two spherical particles with constant charges or potentials were obtained. Known relations of the Derjaguin-Landau-Verwey-Overbeek theory follow from the formulas in the limiting cases.

Author Biographies

Сергей Владимирович Шостак, National University of Life and Environmental Science of Ukraine, Heroyiv Oborony Str., 15, Kyiv, Ukraine, 03041

Ph. D.

Наталия Григорьевна Шкода, Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine General Naumov Str., 17, Kyiv, Ukraine, 03164

Ph. D.

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Published

2014-08-13

How to Cite

Шостак, С. В., & Шкода, Н. Г. (2014). Interaction between small particles in an electrolyte solution. Eastern-European Journal of Enterprise Technologies, 4(5(70), 34–38. https://doi.org/10.15587/1729-4061.2014.26433