Abstract
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.
基金项目
Natural Science Foundation of the Jiangsu Higher Education Institutions of China(22KJB530007)
Natural Science Foundation of the Jiangsu Higher Education Institutions of China(22KJA530001)
国家自然科学基金(22208151)
江苏省自然科学基金(BK20220002)
State Key Laboratory of Materials-Oriented Chemical Engineering(SKL-MCE-22B07)
万方数据