Photoadsorption fraction

{
  "id": "MLC-T-CHM-008800",
  "term": "Photoadsorption fraction",
  "field": "Chemistry",
  "definition": "The number of photoadsorbed atoms, molecules or ions divided by the number of regular surface sites available on the uniformly irradiated adsorbent, written θph = N/Nss. It is a dimensionless fraction of the sites and is always smaller than the photoadsorption capacity, which is its maximum value. The name replaced the older term photoadsorption number.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "photoadsorbate",
    "photoadsorption area number",
    "photoadsorption capacity",
    "regular surface site"
  ],
  "references": [
    "PAC, 2011, 83, 931. 'Glossary of terms used in photocatalysis and radiation catalysis (IUPAC Recommendations 2011)' on page 965 (https://doi.org/10.1351/PAC-REC-09-09-36)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/photoadsorption-fraction/"
}