Construction of BiOI/Bi2Fe4O9 heterojunction for visible-light-activated antibacterial: Photocatalytic sterilization of one plus one is greater than two

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43932200" target="_blank" >RIV/60461373:22310/25:43932200 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2452262725000170" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2452262725000170</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.flatc.2025.100823" target="_blank" >10.1016/j.flatc.2025.100823</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Construction of BiOI/Bi2Fe4O9 heterojunction for visible-light-activated antibacterial: Photocatalytic sterilization of one plus one is greater than two

Popis výsledku v původním jazyce

Semiconductor photocatalysts with narrow band gaps are usually handicapped in scenarios involving visiblelight photocatalytic sterilization due to the rapid recombination of photogenerated electron-hole pairs, sluggish carrier transfer kinetics, and limited reaction active sites. To address these issues, heterojunction engineering was employed to construct heterojunction photocatalyst by coupling two visible-light-activated layered photocatalysts (i.e., an n-type layered BiOI semiconductor and a p-type layered Bi2Fe4O9 semiconductor) for pathogen photoinactivation, aiming at achieving &quot;one plus one is greater than two&quot; photocatalytic antibacterial effect. The bacterial survival rates for single BiOI and Bi2Fe4O9 irradiated under visible light for 60 min were 54.4 % and 55.8 %, respectively. In contrast, the flower-like BiOI/Bi2Fe4O9 heterojunction with optimized component ratio possessed the lowest bacterial survival rate (2.2 %), indicating that the antibacterial activity of the coupled heterojunction photocatalyst is more than twice that of each single component photocatalyst. The instrumental results and density functional theory calculations reveal that the synergistic effect among (i) high sunlight absorption from two visible-light-activated photocatalysts, (ii) high specific surface area from the two layered materials and flower-like nanostructure, and (iii) the formation of the built-in electric field at the interface of BiOI/Bi2Fe4O9 heterojunction contributes to boosting photocatalytic antibacterial performance. Finally, we elucidate the mechanism behind the improved charge separation and transfer kinetics, center dot O2- and center dot OH production, and photocatalytic sterilization activity. This work offers a novel material design concept of &quot;one plus one is greater than two&quot;, which may pave the way for the development of heterojunction photocatalysts for wastewater treatment and purification.

Název v anglickém jazyce

Construction of BiOI/Bi2Fe4O9 heterojunction for visible-light-activated antibacterial: Photocatalytic sterilization of one plus one is greater than two

Popis výsledku anglicky

Semiconductor photocatalysts with narrow band gaps are usually handicapped in scenarios involving visiblelight photocatalytic sterilization due to the rapid recombination of photogenerated electron-hole pairs, sluggish carrier transfer kinetics, and limited reaction active sites. To address these issues, heterojunction engineering was employed to construct heterojunction photocatalyst by coupling two visible-light-activated layered photocatalysts (i.e., an n-type layered BiOI semiconductor and a p-type layered Bi2Fe4O9 semiconductor) for pathogen photoinactivation, aiming at achieving &quot;one plus one is greater than two&quot; photocatalytic antibacterial effect. The bacterial survival rates for single BiOI and Bi2Fe4O9 irradiated under visible light for 60 min were 54.4 % and 55.8 %, respectively. In contrast, the flower-like BiOI/Bi2Fe4O9 heterojunction with optimized component ratio possessed the lowest bacterial survival rate (2.2 %), indicating that the antibacterial activity of the coupled heterojunction photocatalyst is more than twice that of each single component photocatalyst. The instrumental results and density functional theory calculations reveal that the synergistic effect among (i) high sunlight absorption from two visible-light-activated photocatalysts, (ii) high specific surface area from the two layered materials and flower-like nanostructure, and (iii) the formation of the built-in electric field at the interface of BiOI/Bi2Fe4O9 heterojunction contributes to boosting photocatalytic antibacterial performance. Finally, we elucidate the mechanism behind the improved charge separation and transfer kinetics, center dot O2- and center dot OH production, and photocatalytic sterilization activity. This work offers a novel material design concept of &quot;one plus one is greater than two&quot;, which may pave the way for the development of heterojunction photocatalysts for wastewater treatment and purification.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

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

2025

Kód důvěrnosti údajů

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

Název periodika

FlatChem

ISSN

2452-2627

e-ISSN

—

Svazek periodika

50

Číslo periodika v rámci svazku

March 2025

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

nestránkováno

Kód UT WoS článku

001413472500001

EID výsledku v databázi Scopus

2-s2.0-85216250122