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PTFE porous membrane technology: A comprehensive review. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Xu LH, Li SH, Mao H, Li Y, Zhang AS, Wang S, Liu WM, Lv J, Wang T, Cai WW, Sang L, Xie WW, Pei C, Li ZZ, Feng YN, Zhao ZP. Highly flexible and superhydrophobic MOF nanosheet membrane for ultrafast alcohol-water separation. Science 2022; 378:308-313. [PMID: 36264816 DOI: 10.1126/science.abo5680] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
High-performance pervaporation membranes have potential in industrial separation applications, but overcoming the permeability-selectivity trade-off is a challenge. We report a strategy to create highly flexible metal-organic framework nanosheet (MOF-NS) membranes with a faveolate structure on polymer substrates for alcohol-water separation. The controlled growth followed by a surface-coating method effectively produced flexible and defect-free superhydrophobic MOF-NS membranes. The reversible deformation of the flexible MOF-NS and the vertical interlamellar pathways were captured with electron microscopy. Molecular simulations confirmed the structure and revealed transport mechanism. The ultrafast transport channels in MOF-NS exhibited an ultrahigh flux and a separation factor of 8.9 in the pervaporation of 5 weight % ethanol-water at 40°C, which can be used for biofuel recovery. MOF-NS and polydimethylsiloxane synergistically contribute to the separation performance.
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Affiliation(s)
- Li-Hao Xu
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Shen-Hui Li
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Heng Mao
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Yan Li
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Ao-Shuai Zhang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Sen Wang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Wei-Min Liu
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Jing Lv
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Tao Wang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Wei-Wei Cai
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Le Sang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Wen-Wen Xie
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Chan Pei
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Zheng-Zheng Li
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Ying-Nan Feng
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Zhi-Ping Zhao
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
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