Hierarchical SiO2@FeCo2O4 core–shell nanoparticles for catalytic reduction of 4-nitrophenol and degradation of methylene blue

Munisamy Maniyazagan, Perumal Naveenkumar, Hyeon Woo Yang, Hassan Zuhaib, Woo Seung Kang, Sun Jae Kim

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Water contamination is a significant environmental issue in the modern era. Two of the most prominent sources of water pollution are the dyestuff and pharmaceutical industries, and their discharge poses a substantial threat to the ecosystem due to adverse human and environmental health impacts. The methylene blue (MB) dyes and 4-nitrophenol (4-NP) were degraded in this work employing a hierarchical SiO2@FeCo2O4 (SiO2@FCO) core–shell catalyst. The capacity of conventional wastewater treatment systems to treat non-biodegradable contaminants is limited. Hydrothermal synthesis of the hierarchical SiO2@FCO core–shell catalysts was employed to remove 4-NP and degrade MB. The hierarchical SiO2@FCO core–shell properties were investigated using a range of techniques, including FTIR, XRD, XPS, TEM, SEM, and BET. The photocatalytic activity of hierarchical SiO2@FCO core–shell nanoparticles eliminating 4-NP and degrading MB is exceptional when exposed to UV light. The SiO2@FCO catalyst displayed excellent catalytic activity and recycling properties while eliminating 4-NP in the presence of light. Hierarchical SiO2@FCO core–shell nanoparticles has exceptional photocatalytic activity, removing 99.6% of MB in 15 min and more than 99.4% of 4-NP in 10 min.

Original languageEnglish
Article number120123
JournalJournal of Molecular Liquids
Volume365
DOIs
StatePublished - 1 Nov 2022

Keywords

  • 4-Nitrophenol
  • FeCo
  • Hierarchical core–shell
  • Methylene blue
  • Photocatalysts

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