GO/ZIF-8改性聚偏氟乙烯中空纤维膜制备及抗污染性能研究
作者： 刘子豪1， 王海涛1， 常娜2， 刘鹏3， 耿慧彬4， 刘恩彬1，许以农3， 李忠华3*， 陈董根3*
单位： 1. 天津工业大学 环境科学与工程学院， 天津  300387；
2. 天津工业大学 化学工程与技术学院， 天津  300387；
3. 浙江津膜环境科技有限公司， 绍兴 312000； 4. 天津工业大学 材料科学与工程学院， 天津  300387
关键词： PVDF中空纤维膜； 超滤； 氧化石墨烯； ZIF-8； 抗污染
DOI号： 10.16159/j.cnki.issn1007-8924.2026.03.018
分类号： TQ028.8
出版年,卷(期):页码： 2026, 46(3):180-192

摘要：

聚偏氟乙烯（PVDF）中空纤维膜在水处理领域应用广泛，但在实际运行过程中易发生膜污染，制约其长期稳定运行。氧化石墨烯（GO）纳米材料改性的膜抗污染性能优异，但会出现膜通量下降、结构不稳定等问题。本研究以聚多巴胺（PDA）为共价接枝媒介，接枝GO为改性层，以GO含氧基团为配位位点，促进ZIF-8原位生长，成功制备了PVDF-GO/ZIF-8复合膜，实现了膜过滤性能与稳定性提升。实验结果表明，GO接枝使膜亲水性和电负性显著增强，以牛血清白蛋白（BSA）作为模型污染物，GO膜水通量恢复率从57.01%提升至79.65%，抗污染性能增强；引入ZIF-8后，纯水通量由GO膜的334.35 L/（m2·h）提升至558.65 L/（m2·h），同时复合膜在污染循环过滤实验中仍保持较高通量恢复率，并表现出更好的抗压与运行稳定性，为水处理高性能分离膜制备提供了新思路。

Polyvinylidene fluoride (PVDF) hollow-fiber membranes are widely used in the field of water treatment, but it is prone to membrane fouling in the actual operation process, which restricts its long-term stable operation. The current research shows that the membrane modified by graphene oxide (GO) nanomaterials has excellent anti-fouling performance, but there will be problems such as membrane flux decline and structural instability. In this study, PVDF-GO / ZIF-8 composite membrane was successfully prepared by using polydopamine (PDA) as the covalent grafting medium, grafting GO as the modified layer, and GO oxygen-containing groups as the coordination sites to promote the in-situ growth of ZIF-8, and the membrane filtration performance and stability were improved. The experimental results showed that GO grafting significantly enhanced the hydrophilicity and electronegativity of the membrane. Using bovine serum albumin (BSA) as the model pollutant, the water flux recovery rate of the GO membrane increased from 57.01% to 79.65%, and the antifouling performance was enhanced. After the introduction of ZIF-8, the pure water flux increased from 334.35 L/（m2·h）of GO membrane to 558.65 L/（m2·h）.At the same time, the composite membrane still maintained the high-throughput recovery rate in the pollution cycle filtration experiment, and showed better compression resistance and operational stability, which provided the new idea for the preparation of high-performance separation membrane for water treatment. 

基金项目：

国家重点研发计划项目（2023YFE0101000）；山东省重点研发计划项目（2022CXGC020416）资助

作者简介：
第一作者简介： 刘子豪（2002-），男，河北邯郸人，硕士研究生，研究方向为PVDF中空纤维膜的改性及其抗污染研究.*通讯作者，李忠华，E-mail:2245959664@qq.com；陈董根，E-mail:chendg@jinmo.com.cn

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