文献类型：期刊文献

中文题名：MOFs与碳纳米管双重改性渗透汽化复合膜及其性能研究

英文题名：MOFs and Carbon Nanotubes Double Modified Pervaporation Composite Membrane and Its Properties

作者：谢博远[1];马晓华[1];许振良[1]

机构：[1]华东理工大学化工学院,上海市多相结构材料化学工程重点实验室,化学工程研究所膜科学与工程研发中心,上海200237

年份：2020

卷号：46

期号：5

起止页码：608

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD_E2019_2020】；

基金：国家自然科学基金(21978081)。

语种：中文

中文关键词：渗透汽化;MOFs;膜分离;聚乙烯醇;碳纳米管

外文关键词：pervaporation;MOFs;membrane separation;PVA;CNTs

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。
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.