首页|Enhanced activation of peroxymonosulfate by Fe/N co-doped ordered mesoporous carbon with dual active sites for efficient removal of m-cresol

Enhanced activation of peroxymonosulfate by Fe/N co-doped ordered mesoporous carbon with dual active sites for efficient removal of m-cresol

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The novel Fe-N co-doped ordered mesoporous carbon with high catalytic activity in m-cresol removal was prepared by urea-assisted impregnation and simple pyrolysis method.During the preparation of the Fe-NC catalyst,the complexation of N elements in urea could anchor Fe,and the formation of C3N4 during urea pyrolysis could also prevent migration and aggregation of Fe species,which jointly improve the dispersion and stability of Fe.The FeN4 sites and highly dispersed Fe nanoparticles synergistically trigger the dual-site peroxymonosulfate(PMS)activation for highly efficient m-cresol degradation,while the ordered mesoporous structure of the catalyst could improve the mass transfer rate of the catalytic process,which together promote catalytic degradation of m-cresol by PMS activation.Reactive oxygen species(ROS)analytic experiments demonstrate that the system degrades m-cresol by free radical path-way mainly based on SO4-·and·OH,and partially based on OH as the active components,and a possible PMS activation mechanism by 5Fe-50 for m-cresol degradation was proposed.This study can provide theoretical guidance for the preparation of efficient and stable catalysts for the degradation of organic pollutants by activated PMS.

DegradationPeroxymonosulfateFe(Ⅱ)/Fe(Ⅲ)/FeN4Ordered mesopores carbonCatalystRadical

Donghui Li、Wenzhe Wu、Xue Ren、Xixi Zhao、Hongbing Song、Meng Xiao、Quanhong Zhu、Hengjun Gai、Tingting Huang

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College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China

School of Chemical & Environmental Engineering,China University of Mining & Technology-Beijing,Beijing 100083,China

国家自然科学基金国家自然科学基金山东省自然科学基金State Key Laboratory of Heavy Oil ProcessingTalent Foundation funded by Province and Ministry Coconstruction Collaborative Innovation Center of Ecochemical Engineering

2210814521978143ZR2020QB189SKLHOP202203008STHGYX2201

2024

10.1016/j.cjche.2023.06.026

中国化学工程学报(英文版)
中国化工学会

中国化学工程学报(英文版)

CSTPCDEI
影响因子：0.818
ISSN：1004-9541
年,卷(期)：2024.65(1)
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