Stable and Highly Active Single Atom Configurations for Photocatalytic H2 Generation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F24%3A73625346" target="_blank" >RIV/61989592:15640/24:73625346 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1002/adma.202400626" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/adma.202400626</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adma.202400626" target="_blank" >10.1002/adma.202400626</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Stable and Highly Active Single Atom Configurations for Photocatalytic H2 Generation

Popis výsledku v původním jazyce

The employment of single atoms (SAs), especially Pt SAs, as co-catalysts in photocatalytic H-2 generation has gained significant attention due to their exceptional efficiency. However, a major challenge in their application is the light-induced agglomeration of these SAs into less active nanosized particles under photocatalytic conditions. This study addresses the stability and reactivity of Pt SAs on TiO2 surfaces by investigating various post-deposition annealing treatments in air, Ar, and Ar-H-2 environments at different temperatures. It is described that annealing in an Ar-H-2 atmosphere optimally stabilizes SA configurations, forming stable 2D rafts of assembled SAs approximate to 0.5-1 nm in diameter. These rafts not only resist light-induced agglomeration but also exhibit significantly enhanced H-2 production efficiency. The findings reveal a promising approach to maintaining the high reactivity of Pt SAs while overcoming the critical challenge of their stability under photocatalytic conditions.

Název v anglickém jazyce

Stable and Highly Active Single Atom Configurations for Photocatalytic H2 Generation

Popis výsledku anglicky

The employment of single atoms (SAs), especially Pt SAs, as co-catalysts in photocatalytic H-2 generation has gained significant attention due to their exceptional efficiency. However, a major challenge in their application is the light-induced agglomeration of these SAs into less active nanosized particles under photocatalytic conditions. This study addresses the stability and reactivity of Pt SAs on TiO2 surfaces by investigating various post-deposition annealing treatments in air, Ar, and Ar-H-2 environments at different temperatures. It is described that annealing in an Ar-H-2 atmosphere optimally stabilizes SA configurations, forming stable 2D rafts of assembled SAs approximate to 0.5-1 nm in diameter. These rafts not only resist light-induced agglomeration but also exhibit significantly enhanced H-2 production efficiency. The findings reveal a promising approach to maintaining the high reactivity of Pt SAs while overcoming the critical challenge of their stability under photocatalytic conditions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

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

2024

Kód důvěrnosti údajů

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

Název periodika

ADVANCED MATERIALS

ISSN

0935-9648

e-ISSN

1521-4095

Svazek periodika

36

Číslo periodika v rámci svazku

25

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

001196749200001

EID výsledku v databázi Scopus

2-s2.0-85189459563