Solvent-responsive covalent organic framework membranes for precise and tunable molecular sieving
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<sup>-2</sup> hour<sup>-1</sup> bar<sup>-1</sup>), and excellent organic solvent resistance of these smart COF membranes are achieved for a diverse array of nanofiltration applications.
Authors
- Chunqing Ji (ORCID: https://orcid.org/0000-0002-5944-3450)
- Hao Yang (ORCID: https://orcid.org/0000-0002-2798-1246)
- Dongchen Shi (ORCID: https://orcid.org/0000-0001-6669-4154)
- Haoyuan Zhang (ORCID: https://orcid.org/0000-0002-1361-8016)
- Chengjun Kang (ORCID: https://orcid.org/0000-0001-5763-6673)
- Dan Zhao (ORCID: https://orcid.org/0000-0002-4427-2150)
Institutions
- National University of Singapore (SG)
- State Key Laboratory of Pollution Control and Resource Reuse (CN)
- Université Bourgogne Franche-Comté (FR)
- Nanjing University (CN)
Publication Details
- Journal
- Science Advances
- Published
- 2024-12-18
- DOI
- https://doi.org/10.1126/sciadv.ads0260
- Citations
- 44
- Primary Topic
- Covalent Organic Framework Applications
- Type
- article
- Field-Weighted Citation Impact
- 5.15
Funders
- Agency for Science, Technology and Research
- Energy Market Authority of Singapore
- Ministry of Education, India