膜
材料科学
化学工程
静电纺丝
复合数
吸附
水溶液中的金属离子
过滤(数学)
纳米纤维
多孔性
金属
色谱法
化学
复合材料
有机化学
聚合物
冶金
工程类
统计
生物化学
数学
作者
Huibo Cao,Zhiyang Jiang,Jing Tang,Qiong Zhou
出处
期刊:Polymers
[MDPI AG]
日期:2023-12-01
卷期号:15 (23): 4600-4600
标识
DOI:10.3390/polym15234600
摘要
Composite polymolecular separation membranes were prepared by combining multi-branched ZIF-L with high-porosity electrospinning nanofibers PI. Meanwhile, PDA and PEI were introduced into the membrane in order to improve its adhesion. The new membrane is called the "PI@PDA@PEI/ZIF-L-4" composite membrane. Compared with the PI@PDA@PEI/ZIF-8 composite membrane, the new membrane's filtration rates for heavy metal ions such as Cd2+, Cr3+, and Pb2+ were increased by 7.0%, 6.6%, and 9.3%, respectively. Furthermore, the new membrane has a permeability of up to 1140.0 L·m-2·h-1·bar-1, and displayed a very stable performance after four repeated uses. The separation mechanism of the PI@PDA@PEI/ZIF-L composite membrane was analyzed further in order to provide a basis to support the production of separation membranes with a high barrier rate and high flux.
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