Functionalized Boron Nitride Nanosheets: A Thermally Rearranged Polymer Nanocomposite Membrane for Hydrogen Separation

Yuqi Wang, Ze-Xian Low, Seungju Kim, Huacheng Zhang, Xiaofang Chen, Jue Hou, Jong Geun Seong, Young Moo Lee, George P. Simon, Chris H. J. Davies, Huanting Wang

Research output: Contribution to journalArticleResearchpeer-review

10 Citations (Scopus)

Abstract

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 H2 permeability but demonstrated a remarkably increased H2 gas selectivity over other gases, compared with XTR. The XTR membrane heat-treated at 425 °C had a H2 permeability of 210 Barrers and a H2/CH4 separation factor of 24.1, whereas the nanocomposite membrane with 1 wt % FBN exhibited a H2 permeability of 110 Barrers and H2/CH4 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 H2 separation applications.

Original languageEnglish
Pages (from-to)16056-16061
Number of pages6
JournalAngewandte Chemie - International Edition
Volume57
Issue number49
DOIs
Publication statusPublished - 3 Dec 2018

Keywords

  • boron nitride nanosheets
  • gas separation
  • membranes
  • polymers

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