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    谢博远, 马晓华, 许振良. MOFs与碳纳米管双重改性渗透汽化复合膜及其性能研究[J]. 华东理工大学学报(自然科学版), 2020, 46(5): 608-612. DOI: 10.14135/j.cnki.1006-3080.20190809004
    引用本文: 谢博远, 马晓华, 许振良. MOFs与碳纳米管双重改性渗透汽化复合膜及其性能研究[J]. 华东理工大学学报(自然科学版), 2020, 46(5): 608-612. DOI: 10.14135/j.cnki.1006-3080.20190809004
    XIE Boyuan, MA Xiaohua, XU Zhenliang. MOFs and Carbon Nanotubes Double Modified Pervaporation Composite Membrane and Its Properties[J]. Journal of East China University of Science and Technology, 2020, 46(5): 608-612. DOI: 10.14135/j.cnki.1006-3080.20190809004
    Citation: XIE Boyuan, MA Xiaohua, XU Zhenliang. MOFs and Carbon Nanotubes Double Modified Pervaporation Composite Membrane and Its Properties[J]. Journal of East China University of Science and Technology, 2020, 46(5): 608-612. DOI: 10.14135/j.cnki.1006-3080.20190809004

    MOFs与碳纳米管双重改性渗透汽化复合膜及其性能研究

    MOFs and Carbon Nanotubes Double Modified Pervaporation Composite Membrane and Its Properties

    • 摘要: 金属有机骨架结构(MOFs)是一种新型多孔材料,在催化、分离等领域有着很好的应用前景。使用MOFs和碳纳米管(CNTs)与聚乙烯醇(PVA)制备渗透汽化复合膜,并进行乙醇-水和异丙醇-水的渗透汽化实验。实验结果表明:MOFs及CNTs可有效改变PVA渗透汽化膜的结构和性能;随着MOFs含量的增加,膜的渗透通量增加,分离选择性降低;随着CNTs含量的增加,其在膜表面的分散性下降,分离效果变差。在合适的MOFs和CNTs含量下,PVA渗透汽化复合膜具有较好的分离效果。

       

      Abstract: Metal-organic frameworks (MOFs) are a new series of porous materials with some impressing physical and chemical properties such as ultrahigh porosity (up to 90% free volume) and enormous specific surface areas. MOFs show great potential applications in the field of separation, adsorption, catalysis, biotechnology and electronics. Carbon nanotubes (CNTs) are cylindrical molecules that consist of rolled-up sheets of single-layer carbon atoms (graphene). In this work, Polyvinyl alcohol (PVA) composite membranes were fabricated and simultaneously modified by MOFs and CNTs. The physic-co-chemical structures and separation properties of the as-synthesized membranes were measured by field emission scanning electron microscopy, Fourier transform infrared spectoroscopy and pervaporation dehydration of isopropanol aqueous solutions. The results showed that MOFs and CNTs could efficiently change the structures and separation properties of the PVA composite membranes. The permeation flux of the modified PVA composite membranes increased while the separation selectivity decreased when the amount of MOFs increased. It is clear that a modified PVA composite membrane with excellent properties can be obtained when adding proper CNTs and MOFs amounts.

       

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