Tungsten-induced oxygen vacancy in MOF-derived MnO2@carbon for solar-driven photothermal oxidation of formaldehyde

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F25%3A00641374" target="_blank" >RIV/68145535:_____/25:00641374 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.cej.2025.169913" target="_blank" >https://doi.org/10.1016/j.cej.2025.169913</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cej.2025.169913" target="_blank" >10.1016/j.cej.2025.169913</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tungsten-induced oxygen vacancy in MOF-derived MnO2@carbon for solar-driven photothermal oxidation of formaldehyde

Popis výsledku v původním jazyce

Formaldehyde is a major indoor pollutant that has attracted significant attention owing to its adverse effects, motivating extensive research efforts toward effective removal strategies. In this study, Mn-MIL-100 was employed as the precursor to synthesize manganese dioxide (MnO2), an abundant and cost-effective catalyst known for its efficiency in pollutant degradation. To enhance its catalytic performance, MnO2 was doped with tungsten (W) to optimize its morphology, surface area, electronic structure, and charge-transfer properties. These enhancements increased the availability of active sites and improved the photothermal catalytic performance of MnO2 for formaldehyde removal. The synthesized W-doped MnO2@carbon efficiently absorbed full-spectrum solar energy and converted light energy into thermal energy through synergistic photothermal effects, thereby enhancing catalytic efficiency. The findings demonstrate that MnO2 doped with 0.5 % tungsten exhibited optimal catalytic activity, removing 95 % of formaldehyde after 2 h of simulated sunlight exposure and reaching approximately the same removal efficiency within 1 h under combined light and thermal conditions at 60 °C. The high formaldehyde removal efficiency was attributed to the photothermal effects of nanographitic carbon and an increased amount of oxygen vacancies and enhanced electron density resulting from tungsten doping. This method effectively reduces energy consumption by converting light into heat energy, highlighting its significant potential for photothermal applications in pollutant abatement.

Název v anglickém jazyce

Tungsten-induced oxygen vacancy in MOF-derived MnO2@carbon for solar-driven photothermal oxidation of formaldehyde

Popis výsledku anglicky

Formaldehyde is a major indoor pollutant that has attracted significant attention owing to its adverse effects, motivating extensive research efforts toward effective removal strategies. In this study, Mn-MIL-100 was employed as the precursor to synthesize manganese dioxide (MnO2), an abundant and cost-effective catalyst known for its efficiency in pollutant degradation. To enhance its catalytic performance, MnO2 was doped with tungsten (W) to optimize its morphology, surface area, electronic structure, and charge-transfer properties. These enhancements increased the availability of active sites and improved the photothermal catalytic performance of MnO2 for formaldehyde removal. The synthesized W-doped MnO2@carbon efficiently absorbed full-spectrum solar energy and converted light energy into thermal energy through synergistic photothermal effects, thereby enhancing catalytic efficiency. The findings demonstrate that MnO2 doped with 0.5 % tungsten exhibited optimal catalytic activity, removing 95 % of formaldehyde after 2 h of simulated sunlight exposure and reaching approximately the same removal efficiency within 1 h under combined light and thermal conditions at 60 °C. The high formaldehyde removal efficiency was attributed to the photothermal effects of nanographitic carbon and an increased amount of oxygen vacancies and enhanced electron density resulting from tungsten doping. This method effectively reduces energy consumption by converting light into heat energy, highlighting its significant potential for photothermal applications in pollutant abatement.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Journal

ISSN

1385-8947

e-ISSN

1873-3212

Svazek periodika

Volume 525

Číslo periodika v rámci svazku

December 2025

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

14

Strana od-do

169913

Kód UT WoS článku

001616140500007

EID výsledku v databázi Scopus

2-s2.0-105020378482