Preparation of Modified Composite Nanofiltration Membrane Synergistically Using Carboxylic Multi-walled Carbon Nanotube and β-cyclodextrin
作者机构：School of Materials Science and Engineering Shenyang Jianzhu University
出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报-材料科学版(英文))
年 卷 期：2025年第1期
页 面：232-239页
核心收录：
学科分类：080706[工学-化工过程机械] 08[工学] 0807[工学-动力工程及工程热物理]
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 ***,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 *** 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 *** 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/（m2·h）,which is 44.3% higher than that of the pure PVDF *** β-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 *** research will provide a new idea and simple method for developing novel high-performance composite NF membranes.
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