Page 166 - 《精细化工》2023年第2期

第 40 卷第 2 期 精 细 化 工 Vol.40, No.2
20 23 年 2 月 FINE CHEMICALS Feb. 2023

水处理技术与环境保护
具有 PDA-UiO-66 中间层耐溶剂复合

纳滤膜的制备及性能

李 浪 1,2 ，李新冬 1,2* ，李海柯 1,2 ，李文豪 1,2 ，黄万抚 1,2

（1. 江西理工大学 赣州市赣江流域水质安全保障技术创新中心，江西 赣州 341000；2. 江西理工大学
赣州市流域污染模拟与控制重点实验室，江西 赣州 341000）

摘要：将多巴胺和 UiO-66 纳米颗粒共沉积在经 1,6-己二胺交联的聚醚酰亚胺（PEI）基膜上构建了纳米复合中
间层（PDA-UiO-66），并在中间层上进行界面聚合反应制备了耐溶剂复合纳滤膜（TFN-U）。通过 FTIR、XRD、
SEM、AFM、水接触角测量仪对膜结构进行了表征和测试，探究了 UiO-66 质量浓度对 TFN-U 膜耐溶剂性、耐
污染性以及运行稳定性的影响。结果表明，PDA-UiO-66 纳米复合中间层的引入能提高 TFN-U 膜的渗透通量，
2
2
当 UiO-66 纳米颗粒质量浓度为 0.2 g/L 时，TFN-U 2 膜水通量为 63.83 L/(m ·h)，甲醇通量为 28.50 L/(m ·h)，对
刚果红水溶液和刚果红甲醇溶液的截留率为 98.2%和 93.2%，经无水乙醇、丙酮、乙酸乙酯、正己烷及 N,N-二
甲基甲酰胺（DMF）浸泡 48 h 后，其对刚果红的截留率均>94%，通量恢复率达到 78.1%，在连续 24 h 过滤刚
2
果红甲醇溶液后，该膜的甲醇通量为 14.13 L/(m ·h)，截留率为 98.3%，表明 TFN-U 2 膜具有良好的耐溶剂性、
耐污染性以及一定的运行稳定性。
关键词：聚多巴胺；UiO-66；中间层；耐溶剂；复合纳滤膜；水处理技术
中图分类号：X703.1；TB34 文献标识码：A 文章编号：1003-5214 (2023) 02-0388-10

Preparation and properties of solvent-resistant composite

nanofiltration membrane with PDA-UiO-66 interlayer

1,2
1,2
1,2
1,2
LI Lang , LI Xindong 1,2* , LI Haike , LI Wenhao , HUANG Wanfu
（1. Ganzhou Innovation Center for Water Quality Security Technology at Ganjiang River Basin, Jiangxi University of
Science and Technology, Ganzhou 341000, Jiangxi, China; 2. Ganzhou Key Laboratory of Basin Pollution Simulation
and Control, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China）
Abstract: Solvent-resistant composite nanofiltration membrane (TFN-U) was prepared via interfacial
polymerization on the PDA-UiO-66 nanocomposite interlayer, which was constructed from dopamine and UiO-66
nanoparticles co-deposited on polyetherimide (PEI) base membrane crosslinked by 1,6-hexamethylenediamine.
The TFN-U membrane obtained was then characterized and analyzed by FTIR, XRD, SEM, AFM and water
contact angle measuring instrument, followed by exploration on the effects of UiO-66 mass concentration
on its solvent resistance, pollution resistance and operation stability. The results showed that introduction of
PDA-UiO-66 nanocomposite interlayer could improve the permeation flux of TFN-U membrane. When the
mass concentration of UiO-66 nanoparticles was 0.2 g/L, the pure water flux and methanol flux of TFN-U 2
2
membrane were 63.83 and 28.50 L/(m ·h), and the rejection rates of congo red aqueous solution and congo
red methanol solution could still maintain at 98.2% and 93.2%, respectively. After soaking in anhydrous
ethanol, acetone, ethyl acetate, n-hexane and N,N-dimethylformamide (DMF) for 48 h, the rejection rate of
congo red remained above 94%, and the flux recovery rate reached 78.1%. After continuously filtering
2
congo red methanol solution for 24 h, the methanol flux of the membrane was 14.13 L/(m ·h) and the
rejection rate was 98.3%, indicating that TFN-U membrane had good solvent resistance, pollution resistance

收稿日期：2022-06-19; 定用日期：2022-09-05; DOI: 10.13550/j.jxhg.20220566
基金项目：国家自然科学基金（41662004）；江西省研究生创新专项基金（YC2021-S557）
作者简介：李 浪（1996—），男，硕士生，E-mail：731791021@qq.com。联系人：李新冬（1976—），女，副教授，E-mail：lixind@163.com。