Solvent-responsive covalent organic framework membranes for precise and tunable molecular sieving

IF 11.7 1区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Science Advances Pub Date : 2024-12-18 DOI:10.1126/sciadv.ads0260
Hao Yang, Haoyuan Zhang, Chengjun Kang, Chunqing Ji, Dongchen Shi, Dan Zhao
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Abstract

Membrane-based nanofiltration has the potential to revolutionize the large-scale treatment of organic solvents in various applications. However, the widely used commercial membranes suffer from low permeability, narrow structural tunability, and limited chemical resistance. Here, we report a strategy for fabricating covalent organic framework (COF) membranes with solvent-responsive structural flexibility. The interlayer shifting of these COF membranes in polar organic solvents results in sub-nanopores with high selectivity. High rejection rates (>99%), high permeance (>15 kilogram meter−2 hour−1 bar−1), and excellent organic solvent resistance of these smart COF membranes are achieved for a diverse array of nanofiltration applications.

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用于精确和可调分子筛分的溶剂响应型共价有机框架膜
膜基纳滤有可能在各种应用中彻底改变有机溶剂的大规模处理。然而,广泛使用的商用膜存在渗透性低、结构可调性窄、耐化学性有限等问题。在这里,我们报告了一种制造具有溶剂响应结构灵活性的共价有机框架(COF)膜的策略。这些COF膜在极性有机溶剂中的层间位移导致了高选择性的亚纳米孔。高截留率(>99%),高渗透性(>;15千克米- 2小时- 1巴- 1),以及这些智能COF膜优异的有机溶剂抗性,实现了各种纳滤应用。
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来源期刊
Science Advances
Science Advances 综合性期刊-综合性期刊
CiteScore
21.40
自引率
1.50%
发文量
1937
审稿时长
29 weeks
期刊介绍: Science Advances, an open-access journal by AAAS, publishes impactful research in diverse scientific areas. It aims for fair, fast, and expert peer review, providing freely accessible research to readers. Led by distinguished scientists, the journal supports AAAS's mission by extending Science magazine's capacity to identify and promote significant advances. Evolving digital publishing technologies play a crucial role in advancing AAAS's global mission for science communication and benefitting humankind.
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