Bioinspired Macrocyclic Molecule Supported Two‐Dimensional Lamellar Membrane with Robust Interlayer Structure for High‐Efficiency Nanofiltration
- Laboratory of Nuclear Energy Chemistry Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China, Radiochemistry Laboratory School of Nuclear Science and Technology Lanzhou University Lanzhou 730000 China, Engineering Laboratory of Advanced Energy Materials Ningbo Institute of Materials Technology&,Engineering Chinese Academy of Sciences Ningbo 315201 China
- School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China
- Laboratory of Nuclear Energy Chemistry Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China
- Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 China
- Radiochemistry Laboratory School of Nuclear Science and Technology Lanzhou University Lanzhou 730000 China, Engineering Laboratory of Advanced Energy Materials Ningbo Institute of Materials Technology&,Engineering Chinese Academy of Sciences Ningbo 315201 China
- School of Nuclear Science and Engineering East China University of Technology Nanchang 330013 China
- State Key Laboratory of NBC Protection for Civilian Beijing 102205 China
- Engineering Laboratory of Advanced Energy Materials Ningbo Institute of Materials Technology&,Engineering Chinese Academy of Sciences Ningbo 315201 China
2D lamellar membranes (2DLMs) are used for efficient desalination and nanofiltration. However, weak interactions between adjacent stacked nanosheets result in susceptibility to swelling that limits practical applicability. Inspired by the super adhesion of multi‐point suction cups on octopus tentacles, a 2DLM is constructed from Ti 3 C 2 T x MXene supported by the macrocyclic “multi‐point” molecule cucurbit[5]uril (CB5) and demonstrated for nanofiltration of methyl blue (MB) and enrichment of uranyl carbonate. Experimental results and density functional theory calculations indicate that CB5 rivets to the surface of the nanoflakes through strong stable interactions between its multiple binding sites and surface hydroxyl functional groups on MXene nanosheets. This novel 2DLM exhibits excellent nanofiltration performance (69 L m −2 h −1 bar −1 permeance with 93.6% rejection for MB) and can be recycled at least 30 times without significant degradation. The 2DLM exhibits excellent swelling resistance at high salinity, with a demonstration of selective enrichment of uranyl carbonate from artificial water and natural seawater. The results provide a new strategy for constructing highly stable 2DLMs with interlayer spacing controllable from sub‐nano to nanometer scales, for size‐selective sieving of molecules and ions, high‐efficiency nanofiltration, and other applications.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- National Natural Science Foundation of China; National Science Fund for Distinguished Young Scholars; USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES); Young Elite Scientists Sponsorship Program by CAST, and Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1906220
- Alternate ID(s):
- OSTI ID: 1906221
OSTI ID: 1983927
- Journal Information:
- Advanced Science, Journal Name: Advanced Science Journal Issue: 5 Vol. 10; ISSN 2198-3844
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English