净水技术2024，Vol.43Issue(7)：69-75,82,8.DOI:10.15890/j.cnki.jsjs.2024.07.008
CFGO@PVDF复合纳滤膜的结构调控及截留性能
Structure Control and Interception Performance for Composite NF Membrane of CFGO@PVDF
摘要
Abstract
By using polyvinylidene fluoride(PVDF)and carboxylated graphene oxide(CFGO)as raw materials,a highly hydrophilic and efficient desalination CFGO@PVDF composite nanofiltration membrane(GONF)was fabricated.By optimizing the preparation conditions and combining microscopic structure and morphology characterization,the optimal fabrication conditions for the GONF membrane were obtained,achieving a significant improvement in the performance of the composite nanofiltration membrane.The results showed that,compared to traditional PVDF nanofiltration membranes(CNF),the CFGO@PVDF composite nanofiltration membrane exhibited deeper pore channels and significantly enhanced hydrophilicity,with a pure water flux reaching 13.1 L/(m 2·h·bar)(1 bar=100 kPa),which was 2.5 times that of the CNF membrane.Additionally,the crystalline phase of the GONF membrane had been transformed from the α-phase to the β-phase,and the content of oxygen-containing functional groups on the membrane surface had increased,significantly enhancing the retention rate for different 2 g/L salt solutions,with the retention rates for Na2SO4 and MgSO4 being higher than 96％and 95％,respectively,without significant degradation within 60 minutes.This study successfully developed a high-water-flux,efficient and stable desalination CFGO@PVDF composite nanofiltration membrane,providing new insights into the design and fabrication of nanofiltration membranes,as well as offering an effective technical approach to solving global water treatment issues.关键词
聚偏氟乙烯(PVDF)/羧基化氧化石墨烯(CFGO)/亲水性/海水淡化/结构调控Key words
polyvinylidene fluoride(PVDF)/carboxylated graphene oxide(CFGO)/hydrophilicity/seawater desalination/structure control分类
环境科学引用本文复制引用
陈俣良,巴立波,刘一江,吴玉梁,李月影,陈贤达,衣雪松..CFGO@PVDF复合纳滤膜的结构调控及截留性能[J].净水技术,2024,43(7):69-75,82,8.基金项目
国家自然科学基金项目(52360002) （52360002）
海南省重点研究项目(YF2021GXJS026) （YF2021GXJS026）
