Optimized pt single atom harvesting on TiO2 Nanotubes—Towards a most efficient photocatalyst

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F21%3A73610960" target="_blank" >RIV/61989592:15640/21:73610960 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/10.1002/smll.202104892" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/smll.202104892</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/smll.202104892" target="_blank" >10.1002/smll.202104892</a>

Result language
angličtina
Original language name
Optimized pt single atom harvesting on TiO2 Nanotubes—Towards a most efficient photocatalyst
Original language description
In the present work the authors show that anodic TiO2 nanotubes (NT) show excellent harvesting properties for Pt single atoms (Pt SAs) from highly dilute Pt solutions. The tube walls of anodic nanotubes, after adequate annealing to anatase, provide ample of suitable trapping sites-that is, surface Ti3+-O-v (O-v: oxygen vacancy) defects that are highly effective to extract and accumulate Pt in the form of SAs. A saturated (maximized) SA density can be achieved by an overnight immersion of a TiO2 NT layer to a H2PtCl6 solution with a concentration that is as low as 0.01 mm Pt. Such TiO2 NTs with surface trapped Pt SAs provide a maximized high activity for photocatalytic H-2 generation (reaching a turnover frequency (TOF) of 1.24 x 10(6) h(-1) at a density of 1.4 x 10(5) Pt atoms mu m(-2))-a higher loading with Pt nanoparticles does not further increase the photocatalytic activity. Overall, these findings show that anodic TiO2 nanotubes provide a remarkable substrate for Pt extraction and recovery from very dilute solutions that directly results in a highly efficient photocatalyst, fabricated by a simple immersion technique
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
21001 - Nano-materials (production and properties)

Project
<a href="/en/project/EF15_003%2F0000416" target="_blank" >EF15_003/0000416: Advanced Hybrid Nanostructures for Renewable Energy Applications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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