{"term":{"id":"14038","title":"photoadsorption photonic yield","longtitle":"IUPAC Gold Book - photoadsorption photonic yield","doi":"10.1351\/goldbook.14038","code":"14038","status":"current","definitions":[{"id":1,"text":"Ratio of the maximal (typically the initial) rate of photoadsorption of entities \\(\\ce{B}\\) (molecules, atoms, or ions) on a surface to the incident (superscript 0, zero) photon flux, \\(q_{\\rm{p},\\lambda}^{0} = {\\rm{d}}N_{\\rm{p},\\lambda}^{0}\/{\\rm{d}}t\\) at a given wavelength. Both rates should be measured under otherwise identical conditions (preferably as initial rates) in order to avoid concentration and\/or surface area effects.","notes":{"1":"Mathematical expression: \\(\\frac{{\\rm{d}}N_{\\ce{B}}\/{\\rm{d}}t}{q_{\\rm{p},\\lambda}^{0}} \\ \\ {\\rm{for}}\\ t \\to 0\\)","2":"Yield refers to the use of monochromatic irradiation, whereas efficiency is reserved for irradiation within a wavelength range. Photonic refers to incident radiation."},"links":[{"term":"photoadsorption efficiency","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/14036"},{"term":"photoadsorption quantum yield","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/14039"}],"sources":["PAC, 2011, 83, 931. 'Glossary of terms used in photocatalysis and radiation catalysis (IUPAC Recommendations 2011)' on page 966 (https:\/\/doi.org\/10.1351\/PAC-REC-09-09-36)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/14038\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/14038\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/14038\/plain"},"citation":"Citation: 'photoadsorption photonic yield' 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.14038","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2026-06-29T20:46:09+00:00"}}