Superequivalent adsorption

{
  "id": "MLC-T-CHM-011598",
  "term": "Superequivalent adsorption",
  "field": "Chemistry",
  "definition": "The adsorption of counter-ions onto a charged surface in an amount exceeding the initial surface charge, leading to a reversal of the net charge of the surface. This phenomenon often occurs due to specific adsorption of certain ions or the formation of a second layer of adsorbed species. It is particularly relevant in colloid chemistry and electrochemistry.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "inner Helmholtz plane"
  ],
  "references": [
    "PAC, 1986, 58, 437. 'Interphases in systems of conducting phases (Recommendations 1985)' on page 448 (https://doi.org/10.1351/pac198658030437)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/superequivalent-adsorption/"
}