Solid-Vapor Interface Engineered Covalent Organic Framework Membranes for Molecular Separation

Niaz Ali Khan; Runnan Zhang; Hong Wu; Jianliang Shen; Jinqiu Yuan; Chunyang Fan; Li Cao; Mark A. Olson; Zhongyi Jiang

doi:10.1021/jacs.0c04589

Solid-Vapor Interface Engineered Covalent Organic Framework Membranes for Molecular Separation

Niaz Ali Khan, Runnan Zhang, Hong Wu, Jianliang Shen, Jinqiu Yuan, Chunyang Fan, Li Cao, Mark A. Olson, Zhongyi Jiang^*

^*Corresponding author for this work

Chemistry

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

170 Scopus citations

Abstract

Covalent organic frameworks (COFs) with intrinsic, tunable, and uniform pores are potent building blocks for separation membranes, yet poor processing ability and long processing time remain grand challenges. Herein, we report an engineered solid-vapor interface to fabricate a highly crystalline two-dimensional COF membrane with a thickness of 120 nm in 9 h, which is 8 times faster than that in the reported literature. Due to the ultrathin nature and ordered pores, the membrane exhibited an ultrahigh permeance (water, ∼411 L m-2 h-1 bar-1 and acetonitrile, ∼583 L m-2 h-1 bar-1) and excellent rejection of dye molecules larger than 1.4 nm (>98%). The membrane exhibited long-term operation which confirmed its outstanding stability. Our solid-vapor interfacial polymerization method may evolve into a generic platform to fabricate COFs and other organic framework membranes.

Original language	English (US)
Pages (from-to)	13450-13458
Number of pages	9
Journal	Journal of the American Chemical Society
Volume	142
Issue number	31
DOIs	https://doi.org/10.1021/jacs.0c04589
State	Published - Aug 5 2020

Funding

The authors acknowledge the funding provided by the National Natural Science Foundation of China (2181101169, 21878215, 21621004, 21576189, 21490583), the International (Regional) Cooperation and Exchange Projects (Research Fund for International Young Scientists) (21850410457), and the Natural Science Foundation of Tianjin (16JCZDJC36500, 18JCZDJC36900).

ASJC Scopus subject areas

General Chemistry
Biochemistry
Catalysis
Colloid and Surface Chemistry

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title = "Solid-Vapor Interface Engineered Covalent Organic Framework Membranes for Molecular Separation",

abstract = "Covalent organic frameworks (COFs) with intrinsic, tunable, and uniform pores are potent building blocks for separation membranes, yet poor processing ability and long processing time remain grand challenges. Herein, we report an engineered solid-vapor interface to fabricate a highly crystalline two-dimensional COF membrane with a thickness of 120 nm in 9 h, which is 8 times faster than that in the reported literature. Due to the ultrathin nature and ordered pores, the membrane exhibited an ultrahigh permeance (water, ∼411 L m-2 h-1 bar-1 and acetonitrile, ∼583 L m-2 h-1 bar-1) and excellent rejection of dye molecules larger than 1.4 nm (>98%). The membrane exhibited long-term operation which confirmed its outstanding stability. Our solid-vapor interfacial polymerization method may evolve into a generic platform to fabricate COFs and other organic framework membranes.",

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AU - Khan, Niaz Ali

AU - Zhang, Runnan

AU - Wu, Hong

AU - Shen, Jianliang

AU - Yuan, Jinqiu

AU - Fan, Chunyang

AU - Cao, Li

AU - Olson, Mark A.

AU - Jiang, Zhongyi

PY - 2020/8/5

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N2 - Covalent organic frameworks (COFs) with intrinsic, tunable, and uniform pores are potent building blocks for separation membranes, yet poor processing ability and long processing time remain grand challenges. Herein, we report an engineered solid-vapor interface to fabricate a highly crystalline two-dimensional COF membrane with a thickness of 120 nm in 9 h, which is 8 times faster than that in the reported literature. Due to the ultrathin nature and ordered pores, the membrane exhibited an ultrahigh permeance (water, ∼411 L m-2 h-1 bar-1 and acetonitrile, ∼583 L m-2 h-1 bar-1) and excellent rejection of dye molecules larger than 1.4 nm (>98%). The membrane exhibited long-term operation which confirmed its outstanding stability. Our solid-vapor interfacial polymerization method may evolve into a generic platform to fabricate COFs and other organic framework membranes.

AB - Covalent organic frameworks (COFs) with intrinsic, tunable, and uniform pores are potent building blocks for separation membranes, yet poor processing ability and long processing time remain grand challenges. Herein, we report an engineered solid-vapor interface to fabricate a highly crystalline two-dimensional COF membrane with a thickness of 120 nm in 9 h, which is 8 times faster than that in the reported literature. Due to the ultrathin nature and ordered pores, the membrane exhibited an ultrahigh permeance (water, ∼411 L m-2 h-1 bar-1 and acetonitrile, ∼583 L m-2 h-1 bar-1) and excellent rejection of dye molecules larger than 1.4 nm (>98%). The membrane exhibited long-term operation which confirmed its outstanding stability. Our solid-vapor interfacial polymerization method may evolve into a generic platform to fabricate COFs and other organic framework membranes.

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Solid-Vapor Interface Engineered Covalent Organic Framework Membranes for Molecular Separation

Abstract

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ASJC Scopus subject areas

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