Light-Induced Defect Formation and Pt Single Atoms Synergistically Boost Photocatalytic H2Production in 2D TiO2-Bronze Nanosheets

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F22%3A73618676" target="_blank" >RIV/61989592:15640/22:73618676 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27640/22:10251577

Výsledek na webu

<a href="https://pubs.acs.org/doi/10.1021/acssuschemeng.2c05708" target="_blank" >https://pubs.acs.org/doi/10.1021/acssuschemeng.2c05708</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acssuschemeng.2c05708" target="_blank" >10.1021/acssuschemeng.2c05708</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Light-Induced Defect Formation and Pt Single Atoms Synergistically Boost Photocatalytic H2Production in 2D TiO2-Bronze Nanosheets

Popis výsledku v původním jazyce

Ultrathin two-dimensional (2D) semiconductor nanosheets decorated with single atomic species (SAs) have recently attracted increasing attention due to their abundant surface-exposed reactive sites and maximum SAs binding capabilities thus lowering the catalyst cost, without sacrificing high performance for photocatalytic hydrogen (H2) production from water. Here, we present a strategy to prepare titanium dioxide-bronze nanosheets (TiO2-BNS) and H2-reduced TiO2nanosheets (TiO2-HRNS) synthesized, characterized, and applied for photocatalytic H2production. Surprisingly, black TiO2-HRNS show complete photo inactivity, while the TiO2-BNS-Pt0.05nanohybrid shows excellent H2production rate with a very low loading of 0.05 wt % Pt. TiO2-BNS-Pt0.05presents around 10 and 99 times higher photocatalytic rate than pristine TiO2-BNS under solar and 365 nm UV-LED light irradiation, respectively. Due to the 2D morphology and the presence of abundant coordinating sites, the successful formation of widely dispersed Pt SAs was achieved. Most excitingly, the in situ formation of surface-exposed defect sites (Ti3+) was observed for TiO2-BNS under light illumination, suggesting their significant role in enhancing the H2production rate. This self-activation and amplification behavior of TiO2-BNS can be extended to other 2D systems and applied to other photocatalytic reactions, thus providing a facile approach for fully utilizing noble metal catalysts via the successful formation of SAs.

Název v anglickém jazyce

Light-Induced Defect Formation and Pt Single Atoms Synergistically Boost Photocatalytic H2Production in 2D TiO2-Bronze Nanosheets

Popis výsledku anglicky

Ultrathin two-dimensional (2D) semiconductor nanosheets decorated with single atomic species (SAs) have recently attracted increasing attention due to their abundant surface-exposed reactive sites and maximum SAs binding capabilities thus lowering the catalyst cost, without sacrificing high performance for photocatalytic hydrogen (H2) production from water. Here, we present a strategy to prepare titanium dioxide-bronze nanosheets (TiO2-BNS) and H2-reduced TiO2nanosheets (TiO2-HRNS) synthesized, characterized, and applied for photocatalytic H2production. Surprisingly, black TiO2-HRNS show complete photo inactivity, while the TiO2-BNS-Pt0.05nanohybrid shows excellent H2production rate with a very low loading of 0.05 wt % Pt. TiO2-BNS-Pt0.05presents around 10 and 99 times higher photocatalytic rate than pristine TiO2-BNS under solar and 365 nm UV-LED light irradiation, respectively. Due to the 2D morphology and the presence of abundant coordinating sites, the successful formation of widely dispersed Pt SAs was achieved. Most excitingly, the in situ formation of surface-exposed defect sites (Ti3+) was observed for TiO2-BNS under light illumination, suggesting their significant role in enhancing the H2production rate. This self-activation and amplification behavior of TiO2-BNS can be extended to other 2D systems and applied to other photocatalytic reactions, thus providing a facile approach for fully utilizing noble metal catalysts via the successful formation of SAs.

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

2022

Kód důvěrnosti údajů

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

Název periodika

ACS Sustainable Chemistry &amp; Engineering

ISSN

2168-0485

e-ISSN

2168-0485

Svazek periodika

10

Číslo periodika v rámci svazku

51

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

"17286 "- 17296

Kód UT WoS článku

000901623800001

EID výsledku v databázi Scopus

2-s2.0-85144253205