A novel MnFe2O4-HSO3 nanocatalyst for heterogeneous Fenton degradation of antibiotics

A novel sulfonic-functionalized MnFe 2 O 4 (MnFe 2 O 4 -HSO 3 ) Fenton nanocatalyst was prepared and tested for the degradation of three antibiotics from different categories. The effect of category of the antibiotic was investigated and the obtained results indicated that the degradation rate was the highest for erythromycin, lower for tetracycline and the lowest for amikacin. Moreover, the role of -HSO 3 was investigated by a series of comparative experiments between MnFe 2 O 4 and MnFe 2 O 4 -HSO 3 . The introduction of -HSO 3 prevented the leaching of metals and promoted the decomposition of H 2 O 2 into •OH radicals. Finally, the excellent stability of MnFe 2 O 4 -HSO 3 was verified.