Solvothermal Synthesis of Manganese Ferrite as A Magnetic Heterogenous Fenton Catalyst for Tetracycline Elimination

To investigate the antibiotic degradation activity of heterogenous based catalysts, the magnetic spinel material MnFe2O4 (MFO) was prepared via the solvothermal method and applied to the tetracycline hydrochloride (TCH) elimination in water with the assistance of H2O2. X-ray diffraction (XRD), scanning electron microscopy (SEM), and N2 adsorption-desorption isotherms methods were utilized to characterize the structure morphology, specific surface area, and pore size of the nanomaterial. The synthesized MFO nanoparticles possessed a uniform spherical shape and low agglomeration, with a particle size of 200 nm. The catalytic system could remove about 80% of TCH within 2 h of treatment by this Fenton reaction, with MFO dosage being 0.05 g/L and H2O2 concentration being 2.5 mL/L. Scavenging examinations were explored, showing that •O2− and •OH free radicals all participated in the TCH degradation, and a possible TCH removal mechanism was proposed. On the basis of its economical accessibility, high biological safety, and high activity, the MnFe2O4/H2O2 catalytic system can be a promising solution for the treatment of highly stable organic pollutants.