化工进展2024，Vol.43Issue(3)：1436-1445,10.DOI:10.16085/j.issn.1000-6613.2023-0494
氧化剂类型对rGO/CNTs催化膜去除水中消炎药成分的影响
Effects of peroxide types on the removal of anti-inflammatory medicines in water with rGO/CNTs catalytic membranes
摘要
Abstract
Sulfapyridine(SSZ)and trimethoprim(TMP)were the typical combinations of anti-inflammatory medicines,and it would cause ecological risks when discharged into water bodies.The carbon mats composited with reduced graphene oxide and carbon nanotubes(rGO/CNTs)were loaded onto the microfiltration membranes,which were used to activate various peroxides for the removal of pollutants.Thus,an in-situ catalytic oxidation system could be built up in the continuous flow mode.Results showed that peroxodisulfate(PDS)and permonosulfate(PMS)were the best alternative for effectively removing SSZ and TMP with rGO/CNTs catalytic membranes,respectively.Meanwhile,the performances of hydrogen peroxide(H2O2)-based systems significantly decreased as increasing continuous operation time.According to the quenching experiments of reactive oxygen species,functional group characterization on the surface of carbon mats and density functional theory calculations,the defects structures in carbon mats were considered as the critical sites for the adsorption and activation of PDS and PMS molecules,resulting in non-radical pathways including surface-confined oxidation and singlet oxygen(1O2).In comparison to H2O2-based systems dominated by hydroxyl radical(·OH)reaction,the PDS and PMS catalytic oxidation processes exhibited more significantly target selectivity,more resistant to background substances in real water matrices and more effectively control membrane fouling.These findings could provide the guides in the further optimizing functional design of carbonaceous catalytic membranes and promoting the development of novel in-situ catalytic oxidation processes.关键词
催化/膜/石墨烯/过氧化物/消炎药成分Key words
catalysis/membrane/graphene/peroxide/anti-inflammatory medicines分类
资源环境引用本文复制引用
严昱,夏芯,骆俊鹏,刘大朋,钱飞跃..氧化剂类型对rGO/CNTs催化膜去除水中消炎药成分的影响[J].化工进展,2024,43(3):1436-1445,10.基金项目
国家自然科学基金(51908394) （51908394）
江苏省研究生培养创新工程研究生科研与创新计划(SJCX22_1563,SJCX23_1715) （SJCX22_1563,SJCX23_1715）
苏州市重点产业技术创新项目(SYG202141) （SYG202141）
苏州市社会发展科技创新重点项目(2022SS10). （2022SS10）
