新型炭材料（中英文）2026，Vol.41Issue(4)：890-904,15.DOI:10.1016/S1872-5805(26)61101-8
基于缺陷可调碳纳米片/单原子铁催化剂活化过二硫酸盐高效降解苯酚
Single-atom iron catalysts on carbon nanosheets with specific defects for efficient phenol degradation by peroxydisulfate activation
摘要
Abstract
Phenolic compounds are typ-ical refractory organic pollutants in coal chemical coking wastewater.The large-scale use of high-performance Fe-C composites in advanced oxidation pro-cesses for water treatment is limited by their complex synthesis and high cost.We report a low-cost Fe/N―C catalyst composed of nitrogen-doped carbon nanosheets containing abundant defects(sp3-C/sp2-C=0.66)coordinated with single-atom iron species.The catalyst was prepared using coal-tar pitch,a com-mon by-product of the coal chemical industry,as the carbon precursor,dicyandiamide as the auxiliary nitrogen source,and Fe-Cl3·6H2O as the iron precursor,using a self-assembly and pyrolysis strategy with graphitic carbon nitride(g-C3N4)as a tem-plate.The Fe/N―C catalyst has an outstanding catalytic performance for the activation of peroxydisulfate,achieving over 98%phenol degradation within 30 min and a 60%total organic carbon removal rate.Characterization and mechanism studies have shown that in the Fe/N―C/PDS system,the degradation of phenol proceeds by both radical and non-radical path,with singlet oxygen(1O2)acting as the primary reactive oxygen species.Furthermore,compared with N―C,Fe/N―C has a greater ability to mediate interfacial electron transfer.This work provides an economical way to convert coal-tar pitch to carbon-based materi-als for efficient water treatment.关键词
缺陷碳材料/单原子铁/高级氧化/电子转移/煤焦油沥青Key words
Defect carbon materials/Single-atom iron/Advanced oxidation/Electron transfer/Coal-tar pitch分类
化学化工引用本文复制引用
王瑞雪,邱子涵,张润萌,冷昌宇,王旭珍,邱介山..基于缺陷可调碳纳米片/单原子铁催化剂活化过二硫酸盐高效降解苯酚[J].新型炭材料（中英文）,2026,41(4):890-904,15.基金项目
The authors acknowledge the financial support from projects funded by the National Natural Science Foundation of China(22578053,22179017),the Na-tional Key Research and Development Program of China(2022YFB4101600,2022YFB4101601)and the assistance of DUT Instrumental Analysis Center. 国家自然科学基金(22578053、22179017),国家重点研发计划(2022YFB4101600、2022YFB4101601). （22578053,22179017）
