Preparation of Modified Composite Nanofiltration Membrane Synergistically Using Carboxylic Multi- walled Carbon Nanotube and β-cyclodextrin  

作　　者：LIU Peng MAO Junpeng FANG Yanfeng YU Yunwu CHEN Changxiu TANG Ning WAN Ye GU Yaxin LIU Yunxue WANG Lihua 刘鹏(School of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang 110168,China)

机构地区：[1]School of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang 110168,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2025年第1期232-239,共8页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(No.52278453);Basic Scientific Research Project of Colleges and Universities of Liaoning Provincial Department of Education(Nos.LJ212410153013,LJKQZ2021060)。

摘　　要：A new modified blend ultrafiltration(UF)membrane with good hydrophilicity,high porosity and excellent anti-fouling performance was developed by using carboxylic multi-walled carbon nanotube(CMWCNT)as casting solution additive.Furthermore,a composite nanofiltration(NF)membrane with large water flux and good retention rate was fabricated by using the PVDF/CMWCNT blend UF membrane as the substrate,and polyvinyl alcohol(PVA),β-cyclodextrin(β-CD)and polyethylenimine(PEI)as the coating solution.The results show that with the appropriate addition of CMWCNT in the casting solution,the surface roughness,porosity and recovery rate of the PVDF/CMWCNT blend UF membrane is obviously increased.The water flux of blend UF membrane is significantly improved when the CMWCNT content increases from 0 wt%to 0.2 wt%.The water flux of blend UF membrane with 0.2 wt%CMWCNT is 162.7 L/(m^(2)·h),which is 44.3%higher than that of the pure PVDF membrane.Whenβ-CD content is 0.8 wt%,the retention rate of Congo red by PVDF/CMWCNT/β-CD composite NF membrane reaches 98.7%,which is 28.3%higher than that of single PVA/PEI modified membrane.This research will provide a new idea and simple method for developing novel high-performance composite NF membranes.

关 键 词：CMWCNT CYCLODEXTRIN NANOFILTRATION MEMBRANE 

分 类 号：TQ051.893[化学工程]