CuFe2O4 as a heterogeneous Fenton catalyst for the removal of ciprofloxacin from aqueous solution at natural pH
In the present study, a bimetallic oxide catalyst of CuFe2O4 was synthesized via facile co-precipitation process and characterized using various techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscope (FESEM), energy dispersive X-ray (EDX), N2 adsorption – desorption analysis and UV-visible spectroscopy. Subsequently, it was used to degrade ciprofloxacin, a fluoroquinolone antibiotic, from an aqueous solution under various conditions. The effect of various operational parameters such as catalyst loading, H2O2 volume, initial ciprofloxacin concentration, inorganic ions, and solar irradiation has also been evaluated. The removal process was found to follow the trend: photo-Fenton > Fenton > catalytic > adsorption > photolysis. Finally, the results showed that CuFe2O4 catalyst degraded a high percentage of ciprofloxacin and maintained reasonable efficiency even after five cycles. Thus, CuFe2O4 is a promising catalyst for the activation of H2O2 to degrade ciprofloxacin antibiotics.
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