A new correlation effect in the Helmholtz and surface potentials of the electrical double layer

Enrique González-Tovar*, Felipe Jiménez-Ángeles, René Messina, Marcelo Lozada-Cassou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

The restricted primitive model of an electrical double layer around a spherical macroparticle was discussed. The theoretical curves for the Helmholtz and surface potentials versus the macroparticle charge showed an unexpected positive curvature when the ionic size of uni- and divalent electrolyte species was increased. The concept of compactness of the electrical double layer was introduced. Analysis shows that the interplay between electrostatic and ionic size correlation effects was responsible for the singularity.

Original languageEnglish (US)
Pages (from-to)9782-9793
Number of pages12
JournalJournal of Chemical Physics
Volume120
Issue number20
DOIs
StatePublished - May 22 2004
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry

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