Apparent quantum yield - Key role of spatial distribution of irradiation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F23%3A10252416" target="_blank" >RIV/61989100:27360/23:10252416 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27710/23:10252416 RIV/60461373:22340/23:43928200
Result on the web
<a href="https://www.sciencedirect.com/science/article/abs/pii/S0926860X23001461?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0926860X23001461?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apcata.2023.119166" target="_blank" >10.1016/j.apcata.2023.119166</a>

Result language
angličtina
Original language name
Apparent quantum yield - Key role of spatial distribution of irradiation
Original language description
Based on the apparent quantum yield, photocatalytic activities are compared under various experimental conditions. However, their assessment from experimental data requires knowing the intensity of incident light, which generally differs from that emitted by a radiation source. Most reports provide apparent quantum yields derived from emission intensity, leading to inaccurate, and often strongly underestimated, figures. To correlate differences between emitted and incident light intensity, we measured local light intensity at discrete points of an incident surface, approximated its spatial distribution by linear interpolation and extrapolation, calculated total incident light energy by integration, and compared this value with that given by irradiation source manufacturer. The calculated incident light energy was lower than that provided by the manufacturers of all irradiation sources tested. Due to this refinement (lower energy), the obtained apparent quantum yields are actually higher, even 5 times higher in case of LED radiation, than those calculated using manufacturer data. (C) 2023 Elsevier B.V.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10406 - Analytical chemistry

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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