纳滤
聚酰胺
界面聚合
扩散
膜
离子液体
化学工程
材料科学
离子键合
表面电荷
二价
聚合物
化学
离子
单体
高分子化学
有机化学
热力学
复合材料
工程类
物理
物理化学
生物化学
催化作用
冶金
作者
Bian‐Bian Guo,Chang Liu,Cheng‐Ye Zhu,Jia‐Hui Xin,Chao Zhang,Hao‐Cheng Yang,Zhi‐Kang Xu
标识
DOI:10.1038/s41467-024-46580-6
摘要
Fine design of surface charge properties of polyamide membranes is crucial for selective ionic and molecular sieving. Traditional membranes face limitations due to their inherent negative charge and limited charge modification range. Herein, we report a facile ionic liquid-decoupled bulk/interfacial diffusion strategy to elaborate the double charge flips of polyamide membranes, enabling on-demand transformation from inherently negative to highly positive and near-neutral charges. The key to these flips lies in the meticulous utilization of ionic liquid that decouples intertwined bulk/interfacial diffusion, enhancing interfacial while inhibiting bulk diffusion. These charge-tunable polyamide membranes can be customized for impressive separation performance, for example, profound Cl
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