Electron migration pathways in S-scheme GaP-TiO2 photocatalysts and their implications for photocatalytic hydrogen production

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F25%3A39923094" target="_blank" >RIV/00216275:25310/25:39923094 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27710/25:10258035

Výsledek na webu

<a href="https://doi.org/10.1016/j.actamat.2025.121274" target="_blank" >https://doi.org/10.1016/j.actamat.2025.121274</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2025.121274" target="_blank" >10.1016/j.actamat.2025.121274</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electron migration pathways in S-scheme GaP-TiO2 photocatalysts and their implications for photocatalytic hydrogen production

Popis výsledku v původním jazyce

The integration of gallium phosphide (GaP) with TiO2 provides a promising approach to enhance the separation of photogenerated electrons and holes, thus improving photocatalytic efficiency. GaP-TiO2 photocatalysts (0.47.6 wt% GaP) were prepared via the wet impregnation of commercial GaP onto TiO2 synthesized using sol-gel method in a reverse micellar environment. The surface element composition and structural, textural, optical, and electronic properties of the GaP-TiO2 photocatalysts were investigated. The results confirm the successful formation of an S-scheme heterostructure in the GaP-TiO2 composite and reveal the charge carrier migration pathway. This heterostructure, combined with a photocurrent doubling effect induced by methanol in the reaction, significantly enhances hydrogen production during the photocatalytic decomposition of aqueous methanol solutions. The improved performance of these photocatalysts is attributable to the synergistic interaction of GaP and TiO2, facilitating separation and reducing recombination, thus boosting overall photocatalytic performance.

Název v anglickém jazyce

Electron migration pathways in S-scheme GaP-TiO2 photocatalysts and their implications for photocatalytic hydrogen production

Popis výsledku anglicky

The integration of gallium phosphide (GaP) with TiO2 provides a promising approach to enhance the separation of photogenerated electrons and holes, thus improving photocatalytic efficiency. GaP-TiO2 photocatalysts (0.47.6 wt% GaP) were prepared via the wet impregnation of commercial GaP onto TiO2 synthesized using sol-gel method in a reverse micellar environment. The surface element composition and structural, textural, optical, and electronic properties of the GaP-TiO2 photocatalysts were investigated. The results confirm the successful formation of an S-scheme heterostructure in the GaP-TiO2 composite and reveal the charge carrier migration pathway. This heterostructure, combined with a photocurrent doubling effect induced by methanol in the reaction, significantly enhances hydrogen production during the photocatalytic decomposition of aqueous methanol solutions. The improved performance of these photocatalysts is attributable to the synergistic interaction of GaP and TiO2, facilitating separation and reducing recombination, thus boosting overall photocatalytic performance.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

<a href="/cs/project/GA20-09914S" target="_blank" >GA20-09914S: Fotokatalyzátory s heteropřechodem a fotokatalyzátory TiO2 současně dopované kovy a nekovy pro environmentální fotokatalytické reakce</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

Acta Materialia

ISSN

1359-6454

e-ISSN

1873-2453

Svazek periodika

296

Číslo periodika v rámci svazku

September 2025

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

121274

Kód UT WoS článku

001525544000001

EID výsledku v databázi Scopus

2-s2.0-105008946731