Nitrogen-doped Mesoporous Carbon Material (NCMK-3) As A Catalyst For The Removal Of 4-chlorophenol During Persulfate Oxidation And Its Efficiency After Reuse

Persulfate(PS)oxidation of 4-chlorophenol(4CP)is mostly catalyzed by relatively expensive metal substrates.In this study,I investigated the influence of nitrogen-doped and non-doped mesoporous carbon materials(NCMK-3 and CMK-3)during persulfate(PS)oxidation of 4CP in water.Batch experiments were conducted such that PS was added to simulated contaminant mixture after 1 h agitation with NCMK-3 and CMK-3.Further,the experiment was carried out at different temperatures,p H ranges,concentrations of persulfate(PS),and different doses of NCMK-3,since it recorded better removal rates compared to CMK-3.The results revealed that NCMK-3 and CMK-3 aided the removal of 4CP from water during persulfate oxidation.When persulfate was added after an hour of equilibration with CMK-3 and NCMK-3,83% and 92% of 4CP were removed within 20 min,respectively,whereas lower removal rates(≤40)were recorded in the absence of persulfate(PS).The removal rates of 4CP increased with an increase in temperature but reduced in the alkaline medium in the NCMK-3/PS system.The efficiency of the NCMK-3 reduced significantly.Based on the results,Non-radical oxidation of carbocatalysts can be used as a green and effective oxidation strategy for aqueous recovery and aqueous phase oxidation and NCMK-3 influences the activity of PS oxidation of4-chlorophenol(4CP)and exhibited a synergistic effect in the removal of the organic contaminant from water.