Platinum single atoms on titania aid dye photodegradation whereas platinum nanoparticles do not

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F25%3A39923357" target="_blank" >RIV/00216275:25310/25:39923357 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26620/26:0197911
Result on the web
<a href="https://doi.org/10.1039/d4nr02450h" target="_blank" >https://doi.org/10.1039/d4nr02450h</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d4nr02450h" target="_blank" >10.1039/d4nr02450h</a>

Result language
angličtina
Original language name
Platinum single atoms on titania aid dye photodegradation whereas platinum nanoparticles do not
Original language description
The photocatalytic degradation of unwanted organic species has been investigated for decades using modified and non-modified titania nanostructures. In the present study, we investigate the co-catalytic effect of single atoms (SAs) of Pt and Pt nanoparticles on titania substrates on the degradation of the two typical photodegradation model pollutants: Acid Orange 7 (AO7) and Rhodamine B (RhB). For this, we use highly defined sputter deposited anatase layers and load them with Pt SAs at different loading densities or alternatively with Pt nanoparticles. We find that the Pt SAs have strong accelerating effects (already for a low loading density of similar to 105 SAs mu m-2) on the photodegradation of AO7, whereas Pt nanoparticles do hardly have an effect on the decay kinetics. The main beneficial effect of SA Pt is facilitated superoxide formation, which for SAs is significantly enhanced. Overall, the work demonstrates that Pt SA co-catalysts can have a beneficial effect not only for the well-studied use of H2 generation, but also in the photocatalytic degradation of pollutants-this is particularly the case if the degradation is dominated by a conduction band electron transfer to dissolved O2 in the solution.
Czech name
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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
20501 - Materials engineering

Project
<a href="/en/project/GX23-08019X" target="_blank" >GX23-08019X: Single-Atom-based 2D-Photocatalysts</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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