Mechanistic investigation of rapid catalytic degradation of acetaminophen using Electrochemical-induced CoFe2O4 by activation of peroxymonosulfate

Advanced oxidation technology based on PeroxyMonoSulfate (PMS) has become a research hotspot in the field of water treatment. To improve the activation efficiency of PMS, electrochemically assisted spinel type catalyst CoFe 2 O 4 was used to activate PMS and achieve effective degradation of acetaminophen. The influence of single factor on degradation was explored to determine the best degradation process parameters of E/CoFe 2 O 4 /PMS system. Results show that under the optimum reaction conditions (DC voltage is 6[Formula: see text]V, the initial mass concentration of acetaminophen is 10[Formula: see text]mg[Formula: see text]L[Formula: see text], the dosage of CoFe 2 O 4 is 0.3[Formula: see text]g[Formula: see text]L[Formula: see text], and the mass concentration of PMS is 1.5[Formula: see text]g[Formula: see text]L[Formula: see text]), the degradation rate of acetaminophen reaches up to 95% within 20[Formula: see text]min. CoFe 2 O 4 catalyst showed a good stability, with only a 12% decrease in acetaminophen degradation after three cycles. Radical quenching tests show that [Formula: see text] and [Formula: see text] played predominant roles in the advanced oxidation process. This work provides a new strategy for more efficiency in PMS activation.