Catalytic degradation of mefenamic acid by peroxymonosulfate activated with MWCNTs-CoFeO: influencing factors, degradation pathway, and comparison of activation processes.

The cobalt ferrite loaded on multi-walled carbon nanotubes (MWCNTs-CoFeO) was synthesized and used as a novel catalyst for the degradation of mefenamic acid (MFA) in the presence of peroxymonosulfate (PMS). The results showed that MWCNTs-CoFeO has higher catalytic performance in the activation of PMS and degradation of MFA compared with MWCNTs, Co, Fe, and CoFeO. The highest kinetic constant rate (0.