Minuscule Amounts of Pt Single Atoms Selectively Loaded on Minor (101) Facet of Anatase Crystallites Enables Outstanding Utilization Efficiency for Photocatalytic H2 Production

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F25%3A73632852" target="_blank" >RIV/61989592:15640/25:73632852 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27640/25:10258708

Výsledek na webu

<a href="https://advanced.onlinelibrary.wiley.com/doi/10.1002/adfm.202423088" target="_blank" >https://advanced.onlinelibrary.wiley.com/doi/10.1002/adfm.202423088</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adfm.202423088" target="_blank" >10.1002/adfm.202423088</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Minuscule Amounts of Pt Single Atoms Selectively Loaded on Minor (101) Facet of Anatase Crystallites Enables Outstanding Utilization Efficiency for Photocatalytic H2 Production

Popis výsledku v původním jazyce

Pt single atoms (SAs) on TiO2 have been identified as effective co-catalysts in solar photocatalytic H-2 production. In this study, Pt SAs is deposited on single crystal anatase nanosheets (NSs) with minor (101) and major (001) facets and expose them to various thermal treatments in air, Ar, and Ar-H-2 environments. It is found that through Ar-H-2 annealing Pt-species can be accumulated exclusively on the minor (101) facets, i.e., they can be concentrated selectively on the facet where electron exit occurs. This optimally establishes a high photocatalytic H-2 evolution efficiency for an extremely low overall Pt SA loading of approximate to 0.005 wt.% on the anatase crystallites. For this most active SA placement, 11.7 mmol g(-1) h(-1) H-2 production is obtained with a turnover frequency (TOF) up to 253 #H-2 site(-1) s(-1). Note that the corresponding Pt SAs density of 3.1 x 10(4) atoms mu m(-2) is established by loading from only 0.2 mu m Pt solution. These findings demonstrate that placing a very low density of Pt SAs as an electron transfer co-catalyst onto the electron exit sites of a light-harvesting structure (i.e., there where it is needed) can provide a most active photocatalytic structure with an outstanding Pt utilization.

Název v anglickém jazyce

Minuscule Amounts of Pt Single Atoms Selectively Loaded on Minor (101) Facet of Anatase Crystallites Enables Outstanding Utilization Efficiency for Photocatalytic H2 Production

Popis výsledku anglicky

Pt single atoms (SAs) on TiO2 have been identified as effective co-catalysts in solar photocatalytic H-2 production. In this study, Pt SAs is deposited on single crystal anatase nanosheets (NSs) with minor (101) and major (001) facets and expose them to various thermal treatments in air, Ar, and Ar-H-2 environments. It is found that through Ar-H-2 annealing Pt-species can be accumulated exclusively on the minor (101) facets, i.e., they can be concentrated selectively on the facet where electron exit occurs. This optimally establishes a high photocatalytic H-2 evolution efficiency for an extremely low overall Pt SA loading of approximate to 0.005 wt.% on the anatase crystallites. For this most active SA placement, 11.7 mmol g(-1) h(-1) H-2 production is obtained with a turnover frequency (TOF) up to 253 #H-2 site(-1) s(-1). Note that the corresponding Pt SAs density of 3.1 x 10(4) atoms mu m(-2) is established by loading from only 0.2 mu m Pt solution. These findings demonstrate that placing a very low density of Pt SAs as an electron transfer co-catalyst onto the electron exit sites of a light-harvesting structure (i.e., there where it is needed) can provide a most active photocatalytic structure with an outstanding Pt utilization.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/EF15_003%2F0000416" target="_blank" >EF15_003/0000416: Pokročilé hybridní nanostruktury pro aplikaci v obnovitelných zdrojích energie</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

ADVANCED FUNCTIONAL MATERIALS

ISSN

1616-301X

e-ISSN

1616-3028

Svazek periodika

35

Číslo periodika v rámci svazku

24

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

nestránkováno

Kód UT WoS článku

001411546900001

EID výsledku v databázi Scopus

2-s2.0-85216508537