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Functionalized Boron Nitride Nanosheets: A Thermally Rearranged Polymer Nanocomposite Membrane for Hydrogen Separation
Author(s) -
Wang Yuqi,
Low ZeXian,
Kim Seungju,
Zhang Huacheng,
Chen Xiaofang,
Hou Jue,
Seong Jong Geun,
Lee Young Moo,
Simon George P.,
Davies Chris H. J.,
Wang Huanting
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201809126
Subject(s) - membrane , nanocomposite , permeability (electromagnetism) , polyimide , ultimate tensile strength , gas separation , materials science , selectivity , chemical engineering , polymer chemistry , chemistry , organic chemistry , nanotechnology , composite material , biochemistry , layer (electronics) , engineering , catalysis
Amino functionalized boron nitride nanosheets (FBN) were incorporated into a crosslinked, thermally rearranged polyimide (XTR) to fabricate FBN‐XTR nanocomposite membrane. The FBN‐XTR membrane exhibited a small decrease in H 2 permeability but demonstrated a remarkably increased H 2 gas selectivity over other gases, compared with XTR. The XTR membrane heat‐treated at 425 °C had a H 2 permeability of 210 Barrers and a H 2 /CH 4 separation factor of 24.1, whereas the nanocomposite membrane with 1 wt % FBN exhibited a H 2 permeability of 110 Barrers and H 2 /CH 4 separation factor of 275, an order of magnitude greater. At 1 wt % FBN loading, the FBN‐XTR membrane showed three times higher tensile strength and 60 % higher elongation than pristine XTR membrane. In addition, FBN‐XTR was found to be able to be readily processed into thin‐film membranes for practical H 2 separation applications.
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