TY - JOUR
T1 - Solid-Vapor Interface Engineered Covalent Organic Framework Membranes for Molecular Separation
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
N1 - Funding Information:
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).
Publisher Copyright:
Copyright © 2020 American Chemical Society.
PY - 2020/8/5
Y1 - 2020/8/5
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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U2 - 10.1021/jacs.0c04589
DO - 10.1021/jacs.0c04589
M3 - Article
C2 - 32649828
AN - SCOPUS:85089611924
SN - 0002-7863
VL - 142
SP - 13450
EP - 13458
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 31
ER -