首页|Regulation of interlayer channels of graphene oxide nanosheets in ultra-thin Pebax mixed-matrix membranes for CO2 capture
Regulation of interlayer channels of graphene oxide nanosheets in ultra-thin Pebax mixed-matrix membranes for CO2 capture
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For the application of carbon capture by membrane process,it is crucial to develop a highly permeable CO2-selective membrane.In this work,we reported an ultra-thin polyether-block-amide(Pebax)mixed-matrix membranes(MMMs)incorporated by graphene oxide(GO),in which the interlayer channels were regulated to optimize the CO2/N2 separation performance.Various membrane preparation conditions were systematically investigated on the influence of the membrane structure and separation perfor-mance,including the lateral size of GO nanosheets,GO loading,thermal reduction temperature,and time.The results demonstrated that the precisely regulated interlayer channel of GO nanosheets can rapidly provide CO2-selective transport channels due to the synergetic effects of size sieving and pref-erential adsorption.The GO/Pebax ultra-thin MMMs exhibited CO2/N2 selectivity of 72 and CO2 per-meance of 400 GPU(1 GPU=10-6 cm3(STP)cm-2·s-1·cmHg-1),providing a promising candidate for CO2 capture.
Feifan Yang、Yuanhang Jin、Jiangying Liu、Haipeng Zhu、Rong Xu、Fenjuan Xiangli、Gongping Liu、Wanqin Jin
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State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemical Engineering,Nanjing Tech University,Nanjing 211816,China
Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology,School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China
Shandong Production and Research Long Membrane Technology Development Co.,Ltd.,Yantai Economic Development Zone,Yantai 265505,China
Natural Science Foundation of the Jiangsu Higher Education Institutions of ChinaNatural Science Foundation of the Jiangsu Higher Education Institutions of China国家自然科学基金江苏省自然科学基金State Key Laboratory of Materials-Oriented Chemical Engineering
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