Nonradical activation of peroxydisulfate over Fe/N doped mesoporous carbon for selective removal of organic pollutant
Journal of Environmental Chemical Engineering(2023)
摘要
Mesoporous carbon materials are promising catalysts for peroxydisulfate (PDS) activation for degrading aqueous organic pollutants but limited by the intrinsic inertness. Herein, co-doping of iron and nitrogen into the meso-porous carbon framework was performed via thermal conversion of metal-polyphenol coordination polymers (Fe-TA) to synthesize Fe/N co-doped mesoporous carbon for efficient PDS activation. Owing to the large surface area, high graphitization degree and defective configurations, the Fe/N co-doped mesoporous carbon (Fe/N-MCs) exhibited superior catalytic performance toward the degradation of organic pollutants. Electron para-magnetic resonance tests, chemical quenching experiments, electrochemical analysis and spectra measurements revealed that the degradation of organic pollutants over the Fe/N-MCs followed a nonradical oxidation pathway based on electron transfer process. Graphite nitrogen and hydroxyl (C-OH) groups on the defective edges of Fe/ N-MCs were proved to be possible active sites for PDS activation. PDS catalyzed by the Fe/N-MCs exhibited strong anti-interference capability to surrounding inorganic ions (such as Cl-, CO32-, NO3- and SO42-) and natural organic matters, making it a promising candidate for the degradation of organic pollutants. This work provides a new prospect for developing highly active mesoporous carbon materials via heteroatom doping for PDS acti-vation for wastewater decontamination.
更多查看译文
关键词
mesoporous carbon,peroxydisulfate,organic pollutant,selective removal
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要