Multicharged Colloids at the Metal/Electrolyte Interface

Yu. Chikina; Шикина Ю.; V. Shikin; Шикин В.

doi:10.31857/S0424857023010218

Multicharged Colloids at the Metal/Electrolyte Interface

Authors: Chikina Y.¹, Shikin V.²
Affiliations:
1. Institute of Solid State Physics, Russian Academy of Sciences CEA Saclaye
2. Institute of Solid State Physics, Russian Academy of Sciences
Issue: Vol 59, No 1 (2023)
Pages: 56-60
Section: Articles
URL: https://rjsvd.com/0424-8570/article/view/671166
DOI: https://doi.org/10.31857/S0424857023010218
EDN: https://elibrary.ru/JYHWLE
ID: 671166

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Abstract

The electrostatic properties of multicharged colloids (the so-called DLVO complexes) at the interface of two media with different permittivities are discussed. It is shown that being quasi-neutral in the electrolyte volume, the DLVO colloids turn out to be partly charged near the z = 0 boundary that separates these media. The problem of the interaction of an individual colloid, which has a solid inoculating core R0≫a0, (a0 is the interatomic distance) and the charge Q=Ze≫e (e is elementary charge), with the metal/electrolyte interface is considered in detail. The problem has various applications in the diagnosis of DLVO complexes and the practice of dealing with solutions capable of maintaining the electrophoretic motion of colloidal assembles.

Keywords

image force, effective charge, elementary charge, colloid, interface, permittivity

About the authors

Yu. Chikina

Institute of Solid State Physics, Russian Academy of Sciences CEA Saclaye

Email: julia.chikina@cea.fr
91191 Gif-sur-Yvette, France

V. Shikin

Institute of Solid State Physics, Russian Academy of Sciences

Author for correspondence.
Email: shikin@issp.ac.ru
Chernogolovka, Moscow oblast, 142432 Russia

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