Pt Single Atoms as Co-Catalysts on CdS-Sensitized Single-Crystalline TiO2 Nanoflakes for Enhanced Visible Light Photocatalytic H2 Generation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F23%3A73620184" target="_blank" >RIV/61989592:15640/23:73620184 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27640/23:10253034

Výsledek na webu

<a href="https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cctc.202300327" target="_blank" >https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cctc.202300327</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/cctc.202300327" target="_blank" >10.1002/cctc.202300327</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Pt Single Atoms as Co-Catalysts on CdS-Sensitized Single-Crystalline TiO2 Nanoflakes for Enhanced Visible Light Photocatalytic H2 Generation

Popis výsledku v původním jazyce

Studies on single-atom catalysts (SACs) with individually isolated metal atoms anchored on specific supports have gained great interest in photocatalysis due to their enhanced catalytic activity and optimal atom utilization. By providing an optimized number of active sites and enhancing their intrinsic activity, SACs afford a distinctive platform for photocatalysis at the atomic level. In this study, we investigate the photocatalytic H-2 generation of Pt single atoms (SAs) anchored on CdS-sensitized single crystalline anatase TiO2 nanoflakes (ATNF) in the visible spectral range. Vertically-aligned ATNF were synthesized on fluorine-doped tin oxide substrates by a hydrothermal process, which were further sensitized by CdS nanoislands (NIs) using the successive ionic layer adsorption and reaction (SILAR) technique. Finally, a reactive-deposition approach was used to successfully anchor Pt SAs on CdS-sensitized ATNF. Under optimized conditions, the highest photocatalytic H-2 evolution on Pt-anchored single atom CdS sensitized ATNF was 17.8 mu L h(-1) under visible light illumination, which is 15.8, 7.5, and 6.7-fold higher than bare CdS/FTO, PtSA/CdS/FTO, and ATNF, respectively. Overall, the density of Pt SAs plays a vital role via strong trapping of the photogenerated electrons and significantly improves the efficiency of electron-hole separation, making PtSA/ATNF efficient solar-driven photocatalysts.

Název v anglickém jazyce

Pt Single Atoms as Co-Catalysts on CdS-Sensitized Single-Crystalline TiO2 Nanoflakes for Enhanced Visible Light Photocatalytic H2 Generation

Popis výsledku anglicky

Studies on single-atom catalysts (SACs) with individually isolated metal atoms anchored on specific supports have gained great interest in photocatalysis due to their enhanced catalytic activity and optimal atom utilization. By providing an optimized number of active sites and enhancing their intrinsic activity, SACs afford a distinctive platform for photocatalysis at the atomic level. In this study, we investigate the photocatalytic H-2 generation of Pt single atoms (SAs) anchored on CdS-sensitized single crystalline anatase TiO2 nanoflakes (ATNF) in the visible spectral range. Vertically-aligned ATNF were synthesized on fluorine-doped tin oxide substrates by a hydrothermal process, which were further sensitized by CdS nanoislands (NIs) using the successive ionic layer adsorption and reaction (SILAR) technique. Finally, a reactive-deposition approach was used to successfully anchor Pt SAs on CdS-sensitized ATNF. Under optimized conditions, the highest photocatalytic H-2 evolution on Pt-anchored single atom CdS sensitized ATNF was 17.8 mu L h(-1) under visible light illumination, which is 15.8, 7.5, and 6.7-fold higher than bare CdS/FTO, PtSA/CdS/FTO, and ATNF, respectively. Overall, the density of Pt SAs plays a vital role via strong trapping of the photogenerated electrons and significantly improves the efficiency of electron-hole separation, making PtSA/ATNF efficient solar-driven photocatalysts.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21002 - Nano-processes (applications on nano-scale); (biomaterials to be 2.9)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ChemCatChem

ISSN

1867-3880

e-ISSN

1867-3899

Svazek periodika

15

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

8

Strana od-do

—

Kód UT WoS článku

000989571900001

EID výsledku v databázi Scopus

2-s2.0-85159570871