Pt Single Atoms on TiO2 Can Catalyze Water Oxidation in Photoelectrochemical Experiments

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F24%3A73626022" target="_blank" >RIV/61989592:15640/24:73626022 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27640/24:10255046
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/jacs.4c03319" target="_blank" >https://pubs.acs.org/doi/10.1021/jacs.4c03319</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/jacs.4c03319" target="_blank" >10.1021/jacs.4c03319</a>

Result language
angličtina
Original language name
Pt Single Atoms on TiO2 Can Catalyze Water Oxidation in Photoelectrochemical Experiments
Original language description
Photoelectrochemical water splitting on n-type semiconductors is highly dependent on catalysis of the rate-determining reaction of O-2 evolution. Conventionally, in electrochemistry and photoelectrochemistry O-2 evolution is catalyzed by metal oxide catalysts like IrO2 and RuO2, whereas noble metals such as Pt are considered unsuitable for this purpose. However, our study finds that Pt, in its single-atom form, exhibits exceptional cocatalytic properties for photoelectrochemical water oxidation on a TiO2 photoanode, in contrast to Pt in a nanoparticle form. The decoration of Pt single atoms onto TiO2 yields a remarkable current density of 5.89 mA cm(-2) at 1.23 V-RHE, surpassing bare TiO2 (or Pt nanoparticle decorated TiO2) by 2.52 times. Notably, this enhancement remains consistent over a wide pH range. By accompanying theoretical work, we assign this significant enhancement to an improved charge transfer and separation efficiency along with accelerated kinetics in the oxygen evolution reaction facilitated by the presence of Pt single atoms on the TiO2 surface.
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
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OECD FORD branch
10403 - Physical 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
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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