膜
渗透
石墨烯
材料科学
氧化物
化学工程
选择性
气体分离
纳米技术
吸附
薄膜
化学
有机化学
渗透
催化作用
生物化学
工程类
冶金
作者
Fangxu Yang,Yuanhang Jin,Jiangying Liu,Haipeng Zhu,Rong Xu,Fenjuan Xiangli,Gongping Liu,Wanqin Jin
标识
DOI:10.1016/j.cjche.2023.11.012
摘要
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 performance, 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 preferential adsorption. The GO/Pebax ultra-thin MMMs exhibited CO2/N2 selectivity of 72 and CO2 permeance of 400 GPU (1 GPU = 10−6 cm3(STP)·cm−2·s−1·cmHg−1), providing a promising candidate for CO2 capture.
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