Novel core-shell Fe3O4/NiO nanofibers for the photocatalytic degradation of pharmaceutical compounds

Published in RSC Advances (2025) · Royal Society of Chemistry · Open access, CC BY-NC
DOI: 10.1039/d5ra04859a

Summary

Pharmaceutical residues in water are difficult to remove, and photocatalysts that work well are often hard to recover afterwards. This study addresses both problems with a single fibre architecture: Fe3O4-Fe2NiO4/NiO core-shell nanofibres made by coaxial electrospinning, where the shell drives photocatalytic degradation of active pharmaceutical compounds while the magnetic core lets the spent catalyst be pulled out of the treated water with a magnetic field. The structural, optical, magnetic and photocatalytic properties are characterised together, since in this design they are inseparable.

Authors & Affiliations

  • Roman Viter Corresponding
    Faculty of Science and Technology, University of Latvia, Riga, Latvia
  • Meriem Abid
    Institut Européen des Membranes (IEM), Univ Montpellier, ENSCM, CNRS, France
  • Tara M. Howayek
    Institut Européen des Membranes (IEM), Univ Montpellier, ENSCM, CNRS, France
  • Viktor Zabolotnii
    Faculty of Science and Technology, University of Latvia, Riga, Latvia
  • Martin Sahul
    Institute of Materials Science, Slovak University of Technology in Bratislava, Slovakia
  • Mária Čaplovičová
    Centre for Nanodiagnostics of Materials, Slovak University of Technology in Bratislava, Slovakia
  • Iryna Tepliakova
    Faculty of Science and Technology, University of Latvia, Riga, Latvia
  • Viktors Sints
    Faculty of Science and Technology, University of Latvia, Riga, Latvia
  • Andrejs Dutovs
    Faculty of Science and Technology, University of Latvia, Riga, Latvia

Linari Electrospinning Systems

Coaxial electrospinning needle
Core and shell solutions were delivered through plastic tubing to a coaxial needle (Linari Engineering, Pisa, Italy) with an inner diameter of 0.5 mm, the arrangement that produces the magnetic-core / photocatalytic-shell structure described here.

Topics

Photocatalytic Degradation Water Treatment Core-Shell Nanofibers Magnetic Recovery

Materials

Fe3O4 NiO Pharmaceutical pollutants
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