Chalcopyrite as an oxidants activator for organic pollutant remediation: A review of mechanisms, parameters, and future perspectives

Advanced oxidation processes (AOPs) based on oxidants have attracted attention for the degradation of organic pollutants. The combination chalcopyrite with such as persulfate, peroxide, percarbonate, and others shows promise a system due to its ability activate through various pathways, leading formation numerous radical non-radical species. In this review, generation sulfate (SR) hydroxyl (HR) in AOPs were summarized. significance approaches including Fenton, photo-Fenton, photo/Fenton-like methods, well involvement electrochemical Fenton-based was discussed. stability reusability, toxicity, catalyst mechanism, effects operational parameters (pH, dosage, oxidant concentration) are evaluated detail. review also discusses role Fe2+/3+, Cu1+/2+, S2− Sn2− present CuFeS2 free radicals. Finally, guidelines future research presented terms perspectives.