首页|Cobalt single-atom catalyst tailored ceramic membrane for selective removal of emerging organic contaminants
Cobalt single-atom catalyst tailored ceramic membrane for selective removal of emerging organic contaminants
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Water reuse is an effective way to solve the issues of current wastewater increments and water resource scarcity.Ultrafiltration,a promising method for water reuse,has the characteristics of low energy con-sumption,easy operation,and high adaptability to coupling with other water treatment processes.However,emerging organic contaminants(EOCs)in municipal wastewater cannot be effectively inter-cepted by ultrafiltration,which poses significant challenges to the effluent quality and sustainability of ultrafiltration process.Here,we develop a cobalt single-atom catalyst-tailored ceramic membrane(Co1-NCNT-CM)in conjunction with an activated peroxymonosulfate(PMS)system,achieving excellent EOCs degradation and anti-fouling performance.An interfacial reaction mechanism effectively mitigates membrane fouling through a repulsive interaction with natural organic matter.The generation of singlet oxygen at the Co-N3-C active sites through a catalytic pathway(PMS→PMS*→OH*→O*→OO*→1O2)exhibits selective oxidation of phenols and sulfonamides,achieving＞90％removal rates.Our findings elucidate a multi-layered functional architecture within the Co1-NCNT-CM/PMS system,responsible for its superior performance in organic decontamination and membrane maintenance during secondary effluent treatment.It highlights the power of integrating Co1-NCNT-CM/PMS systems in advanced wastewater treatment frameworks,specifically for targeted EOCs removal,heralding a new direction for sustainable water management.
Single-atom catalytic ceramic membranePeroxymonosulfate activationSelective oxidationInterfacial responseMulti-layer functional zones
State Key Laboratory of Urban Water Resource and Environment,School of Environment,Harbin Institute of Technology,Harbin,150090,PR China
Beijing Key Laboratory for Source Control Technology of Water Pollution,College of Environmental Science and Engineering,Beijing Forestry University,Beijing,100083,PR China
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