Persulfate activation over CoFe2O4/CuS for degradation of Orange II under visible light

Yixing Hao, Fang Zhu, Hao Cheng, Sridhar Komarneni, Jianfeng Ma

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

A magnetic porous composite catalyst has been synthesized from CoFe2O4 and CuS. Its degradation performance towards organic pollutants in a heterogeneous photocatalytic system has been compared with those of the individual photocatalysts and those of individual chemocatalysis systems. Orange II served as a target contaminant. Persulfate and catalyst were combined under visible light conditions to achieve degradation of the organic pollutant, whereupon the degradation efficiency reached up to 97 %. The catalyst has been characterized by X-ray diffraction (XRD) analysis, X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) analysis, Mott–Schottky analysis, scanning electron microscopy (SEM), and solid-state UV/Vis spectrophotometry. The influences of pH and different catalyst and persulfate loadings in the system have been studied. The results of quenching experiments showed non-radical degradation to be a major pathway, with singlet molecular oxygen (1O2) and photogenerated holes (h+) as the critical reactive species. Besides, the magnetic properties of the catalyst are conducive to its recycling, and it still showed high degradation efficiency after three cycles.

Original languageEnglish (US)
Article number111787
JournalJournal of Physics and Chemistry of Solids
Volume185
DOIs
StatePublished - Feb 2024

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics

Cite this