Title: photoadsorbate
Long Title: IUPAC Gold Book - photoadsorbate
DOI: 10.1351/goldbook.14032
Status: current

Definition
Entity (molecule, atom, or ion) bound to the surface of a solid (semiconductor or insulator) particle (typically to a photoadsorption centre) as the result of photoexcitation of either the solid or the entity (molecule, atom, or ion).

Note
When photoadsorption is a step in a photocatalytic reaction, the photoadsorbed entity may be considered an intermediate in the given reaction.

Source
- PAC, 2011, 83, 931. 'Glossary of terms used in photocatalysis and radiation catalysis (IUPAC Recommendations 2011)' on page 963 (https://doi.org/10.1351/PAC-REC-09-09-36)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/14032/html
- json: https://goldbook.iupac.org/terms/view/14032/json
- xml: https://goldbook.iupac.org/terms/view/14032/xml

Citation: Citation: 'photoadsorbate' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.14032
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Accessed: 2026-06-20T09:05:35+00:00