Efficient Degradation of Methylene Blue by Heterogeneous Fenton Reaction Using FeWO4 Nanocatalysts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00142259" target="_blank" >RIV/00216224:14310/25:00142259 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s41742-025-00905-5" target="_blank" >https://link.springer.com/article/10.1007/s41742-025-00905-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s41742-025-00905-5" target="_blank" >10.1007/s41742-025-00905-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Efficient Degradation of Methylene Blue by Heterogeneous Fenton Reaction Using FeWO4 Nanocatalysts

Popis výsledku v původním jazyce

Iron-based catalysts show great promise for Fenton reactions in water treatment applications; however, the predominance of Fe(III) species in most iron catalysts limits their scalability. Although iron tungstate oxide (FeWO4) is commonly employed as a photocatalyst for environmental treatment, its role as a heterogeneous catalyst containing majority of Fe(II) species for the Fenton reaction under dark conditions has not yet been explored. Herein, FeWO4 was synthesized through a straightforward hydrothermal process, achieving a high methylene blue degradation efficiency of 96.1% in the presence of hydrogen peroxide (H2O2) within 30 min. The large surface area of FeWO4 enhanced the availability of Fe(II) active sites for methylene blue degradation, while its magnetic properties enabled convenient separation and recycling of the nanoparticles. Mechanistic investigations indicated that the formation of Fe(IV), likely generated through interactions between Fe(II) and H2O2 on the FeWO4 surface, played a crucial role in the degradation process. Analysis of the electrospray ionization-mass spectrometry suggested the formation of twelve degradation byproducts. The methylene blue degradation efficiency remained stable over six repeated cycles and was minimally impacted by the presence of inorganic anions and humic acid in the water. X-ray diffraction analysis verified that the crystal structure of FeWO4 was preserved post-reaction, while inductively coupled plasma optical emission spectroscopy indicated minimal iron leaching, collectively affirming the catalyst's stability. Consequently, this study introduces novel catalysts for water remediation via Fenton reactions, expanding the potential for advanced treatment approaches.

Název v anglickém jazyce

Efficient Degradation of Methylene Blue by Heterogeneous Fenton Reaction Using FeWO4 Nanocatalysts

Popis výsledku anglicky

Iron-based catalysts show great promise for Fenton reactions in water treatment applications; however, the predominance of Fe(III) species in most iron catalysts limits their scalability. Although iron tungstate oxide (FeWO4) is commonly employed as a photocatalyst for environmental treatment, its role as a heterogeneous catalyst containing majority of Fe(II) species for the Fenton reaction under dark conditions has not yet been explored. Herein, FeWO4 was synthesized through a straightforward hydrothermal process, achieving a high methylene blue degradation efficiency of 96.1% in the presence of hydrogen peroxide (H2O2) within 30 min. The large surface area of FeWO4 enhanced the availability of Fe(II) active sites for methylene blue degradation, while its magnetic properties enabled convenient separation and recycling of the nanoparticles. Mechanistic investigations indicated that the formation of Fe(IV), likely generated through interactions between Fe(II) and H2O2 on the FeWO4 surface, played a crucial role in the degradation process. Analysis of the electrospray ionization-mass spectrometry suggested the formation of twelve degradation byproducts. The methylene blue degradation efficiency remained stable over six repeated cycles and was minimally impacted by the presence of inorganic anions and humic acid in the water. X-ray diffraction analysis verified that the crystal structure of FeWO4 was preserved post-reaction, while inductively coupled plasma optical emission spectroscopy indicated minimal iron leaching, collectively affirming the catalyst's stability. Consequently, this study introduces novel catalysts for water remediation via Fenton reactions, expanding the potential for advanced treatment approaches.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20700 - Environmental engineering

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

INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH

ISSN

1735-6865

e-ISSN

2008-2304

Svazek periodika

19

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

14

Strana od-do

1-14

Kód UT WoS článku

001574651300001

EID výsledku v databázi Scopus

2-s2.0-105016745125