FeCo2O4@CNT/PVDF catalytic spheres as peroxymonosulfate activator for levofloxacin decontamination: Catalytic mechanism, ecotoxicity evolution and degradation pathways

•FeCo2O4@CNT/PVDF catalytic spheres (CSs) were fabricated.•The abilities of PVDF-based catalytic sphere were systematically evaluated.•The catalytic degradation mechanism in CSs & PMS system was proposed.•The LVF degradation pathways were proposed.•The toxicological evaluation of transformation products were assessed.