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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 精细化工全国重点实验室主任，教育部智能材料化工前沿科学中心执行主任，大连理工大学膜科学与技术研究开发中心主任
性别：女
毕业院校：中国科学院大连化物所
学位：博士
所在单位：化工学院
学科：化学工程. 膜科学与技术. 生物医学工程
联系方式：hgaohong@dlut.edu.cn
电子邮箱：hgaohong@dlut.edu.cn
PrestructuredMXenefillers with uniform channels to enhanceCO(2)selective permeation in mixed matrix membranes
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论文类型：期刊论文
发表时间：2021-01-01
发表刊物：JOURNAL OF APPLIED POLYMER SCIENCE
卷号：138
期号：8
ISSN号：0021-8995
关键字：CO(2)separation; Pebax; Mixed matrix membranes and MXene
摘要：The packing pattern of two-dimensional (2D) sheet-like fillers in membranes is relatively random, leading to the unfavorable permeability from tortuous diffusion pathway. A new strategy that using prestructured materials with uniform channels as fillers was proposed. In this work, Ti(3)AlC(2)is etched to prepare multilayered MXene (m-MXene), the channels aggregate as a whole unit, ensure the impossibility of ineffective packing compared with traditional individual sheets, largely facilitating the selective permeation. Then, the m-MXene/Poly (amide-6-b-ethylene oxide) (Pebax) MMMs are synthesized. SEM images demonstrate the accordion shaped structure of filler, which is the multi-channels laminates. Furthermore, the results of gas permeation test exhibit enhanced performance of m-MXene/Pebax MMMs. MMM with 0.5 wt.% m-MXene behaved best, CO(2)permeability of 86.22 Barrer as well as CO2/N(2)selectivity of 104.85, transcending the Robeson upper bound (2008). Having distinct enhancement for CO(2)separation, the m-MXene/Pebax MMMs in this work offer prospective practical applications.