Gouy diffuse layer modelling in phosphate buffers

Sanjun Zhang, Cendrine Moskalenko, Lotfi Berguiga, Juan Elezgaray, Françoise Argoul

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Gouy diffuse-layer theory is revisited to model the electric potential and ions distributions in the neighbourhood of charged surfaces in contact with phosphate buffers. The exact analytical solution of the Poisson-Boltzmann equation is given. We show that the attenuation length of the potential depends both on the ionic strength and on the pH of the buffer.

Original languageEnglish
Pages (from-to)107-112
Number of pages6
JournalJournal of Electroanalytical Chemistry
Volume603
Issue number1
DOIs
StatePublished - 1 May 2007
Externally publishedYes

Keywords

  • Differential capacitance
  • Gouy diffuse layer
  • Poisson-Boltzmann

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