Highly flexible and superhydrophobic MOF nanosheet membrane for ultrafast alcohol-water separation

Li Hao Xu; Shen Hui Li; Heng Mao; Yan Li; Ao Shuai Zhang; Sen Wang; Wei Min Liu; Jing Lv; Tao Wang; Wei Wei Cai; Le Sang; Wen Wen Xie; Chan Pei; Zheng Zheng Li; Ying Nan Feng; Zhi Ping Zhao

doi:10.1126/science.abo5680

Highly flexible and superhydrophobic MOF nanosheet membrane for ultrafast alcohol-water separation

Li Hao Xu, Shen Hui Li, Heng Mao, Yan Li, Ao Shuai Zhang, Sen Wang, Wei Min Liu, Jing Lv, Tao Wang, Wei Wei Cai, Le Sang, Wen Wen Xie, Chan Pei, Zheng Zheng Li, Ying Nan Feng^*, Zhi Ping Zhao^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

179 Citations (Scopus)

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.

Original language	English
Pages (from-to)	308-312
Number of pages	5
Journal	Science
Volume	378
Issue number	6617
DOIs	https://doi.org/10.1126/science.abo5680
Publication status	Published - 21 Oct 2022

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@article{df2b9ec98ef943289d8f7854fb2192ac,

title = "Highly flexible and superhydrophobic MOF nanosheet membrane for ultrafast alcohol-water separation",

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.",

author = "Xu, {Li Hao} and Li, {Shen Hui} and Heng Mao and Yan Li and Zhang, {Ao Shuai} and Sen Wang and Liu, {Wei Min} and Jing Lv and Tao Wang and Cai, {Wei Wei} and Le Sang and Xie, {Wen Wen} and Chan Pei and Li, {Zheng Zheng} and Feng, {Ying Nan} and Zhao, {Zhi Ping}",

year = "2022",

month = oct,

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doi = "10.1126/science.abo5680",

language = "English",

volume = "378",

pages = "308--312",

journal = "Science",

issn = "0036-8075",

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TY - JOUR

T1 - Highly flexible and superhydrophobic MOF nanosheet membrane for ultrafast alcohol-water separation

AU - Xu, Li Hao

AU - Li, Shen Hui

AU - Mao, Heng

AU - Li, Yan

AU - Zhang, Ao Shuai

AU - Wang, Sen

AU - Liu, Wei Min

AU - Lv, Jing

AU - Wang, Tao

AU - Cai, Wei Wei

AU - Sang, Le

AU - Xie, Wen Wen

AU - Pei, Chan

AU - Li, Zheng Zheng

AU - Feng, Ying Nan

AU - Zhao, Zhi Ping

PY - 2022/10/21

Y1 - 2022/10/21

N2 - 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.

AB - 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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U2 - 10.1126/science.abo5680

DO - 10.1126/science.abo5680

M3 - Article

C2 - 36264816

AN - SCOPUS:85140281705

SN - 0036-8075

VL - 378

SP - 308

EP - 312

JO - Science

JF - Science

IS - 6617

ER -

Highly flexible and superhydrophobic MOF nanosheet membrane for ultrafast alcohol-water separation

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