Li Xiangyu, Liu Jingjing, Qu Ruixiang, Zhang Weifeng, Liu Yanan, Zhai Huajun, Wei Yen, Hu Hanshi, Feng Lin
Department of Chemistry, Tsinghua University, 100084, Beijing, P.R. China.
Hangzhou Innovation Research Institute of Beihang University, 310051, Hangzhou, P.R. China.
Nat Commun. 2021 Jan 4;12(1):80. doi: 10.1038/s41467-020-20369-9.
Superwetting porous membranes with tunable liquid repellency are highly desirable in broad domains including scientific research, chemical industry, and environmental protection. Such membranes should allow for controllable droplet bouncing or spreading, which is difficult to achieve for low surface energy organic liquids (OLs). Here we develop an interfacial physical parameter to regulate the OL wettability of nanoparticle-embedded membranes by structuring synergistic layers with reconfigurable surface energy components. Under the tunable solid-liquid interaction in the aggregation-induced process, the membranes demonstrate positive/negative liquid gating regularity for polar protic liquids, polar aprotic liquids, and nonpolar liquids. Such a membrane can be employed as self-adaptive gating for various immiscible liquid mixtures with superior separation efficiency and permeation flux, even afford successive achievement of high-performance in situ extraction-back extraction coupling. This study should provide distinctive insights into intrinsic wetting behaviors and have pioneered a rational strategy to design high-performance separation materials for diverse applications.
具有可调拒液性的超润湿多孔膜在包括科学研究、化学工业和环境保护在内的广泛领域中具有很高的需求。这种膜应允许可控的液滴弹跳或铺展，而对于低表面能有机液体（OLs）来说，这很难实现。在这里，我们通过构建具有可重构表面能成分的协同层，开发了一种界面物理参数来调节纳米颗粒嵌入膜的OL润湿性。在聚集诱导过程中可调的固液相互作用下，该膜对极性质子液体、极性非质子液体和非极性液体表现出正/负液体门控规律。这种膜可以用作各种不混溶液体混合物的自适应门控，具有优异的分离效率和渗透通量，甚至能够连续实现高性能的原位萃取-反萃取耦合。这项研究应为内在的润湿行为提供独特的见解，并开创了一种合理的策略来设计用于各种应用的高性能分离材料。
