Synthesis, characterization and application of iron(Ii) doped copper ferrites (cuii (x)Feii (1-x)Feiii 2O4) as novel heterogeneous photo-fenton catalysts

Asfandyar Khan, Zsolt Valicsek, Ottó Horváth

Research output: Contribution to journalArticle

Abstract

The heterogeneous photo-Fenton type system has huge fame in the field of wastewater treatment due to its reusability and appreciable photoactivity within a wide pH range. This research investigates the synthesis and characterization of iron(II) doped copper ferrite (CuII (x)FeII (1-x)FeIII 2O4 nanoparticles (NPs) and their photocatalytic applications for the degradation of methylene blue (MB) as a model dye. The NPs were prepared via simple co-precipitation technique and calcination. The NPs were characterized by using Raman spectroscopy, X-ray diffractometry (XRD), scanning electron microscopy (SEM), and diffuse reflectance spectroscopy (DRS). SEM reveals the structural change from the spherical-like particles into needle-like fine particles as the consequence of the increasing ratio of copper(II) in the ferrites, accompanied by the decrease of the optical band-gap energies from 2.02 to 1.25 eV. The three major determinants of heterogeneous photo-Fenton system, namely NPs concentration, hydrogen peroxide concentration and pH, on the photocatalytic degradation of MB were studied. The reusability of NPs was found to be continuously increasing during 4 cycles. It was concluded that iron(II) doped copper ferrites, due to their favorable band-gap energies and peculiar structures, exhibit a strong potential for photocatalytic-degradation of dyes, for example, MB.

Original languageEnglish
Article number921
JournalNanomaterials
Volume10
Issue number5
DOIs
Publication statusPublished - May 2020

Keywords

  • Heterogeneous photo-Fenton type system
  • Heterogeneous photo-Fenton type system
  • Iron(II) doped copper ferrite
  • Iron(II) doped copper ferrite
  • Methylene blue (MB)
  • Methylene blue (MB)
  • Photocatalytic-degradation
  • Photocatalyticdegradation

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)

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