Surface reconfiguration of pine-based porous carbon enhanced persulfate for removing bisphenol A
Bisphenol A(BPA),one kind of the most widely-used industrial compounds,is persistent in the environment and poses threat to human health and other microorganisms.Consequently,it is of great significance in developing high-performance removers and understanding their action mechanisms.Based on this,this work used as-prepared pine-based porous carbon(PC)using KOH activation and surface reconstruction for PC using NaBH4 to obtain pine-based porous carbon with enhanced properties(PC-1).Subsequently,a single-factor experimental was used to investigate the ability and mechanism of bisphenol A removal by PC and PC-1 in the persulfate system.Compared to PC,PC-1 exhibited an increase in surface hydroxyl groups,a decrease in carbonyl groups,and an increase in the value of ID1/IG from 1.55 to 1.60.Compared with the PC/PDS system,the PC-1/PDS system improved the degradation efficiency of BPA by 45％,18％,and 64％at 25,35,and 45 ℃,respec-tively.Additionally,quenching and electrochemical experiments illustrated the removal of BPA by PC and PC-1 via radical and non-radical pathways,respectively.The intrinsic defects of carbon were the active sites for persulfate activation,while oxygen-containing functional groups were the key factors in-fluencing the activation pathway.
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