Wang, C., Guo, F., Li, H. et al. (4 more authors) (2020) A porous ionic polymer bionic carrier in a mixed matrix membrane for facilitating selective CO2 permeability. Journal of Membrane Science, 598. 117677. ISSN 0376-7388
Abstract
Inspired by the most efficient CO2 transport across natural biological membranes, a novel bionic channel facilitating CO2 permeation was realized via adding a filtering porous ionic polymer (PIP) in a mixed matrix membrane (MMM). A series of polymer of intrinsic microporosity (PIM-1) based MMMs were fabricated by three pyridine-based PIPs (PIP-Py-X) with different Cl−, Ac−, and BF4− anions as fillers. PIP-Py-X PIPs show highly selective CO2 adsorption capacity and perfect interfacial compatibility with the PIM-1 matrix. More significantly, acting as carriers, the movable anions in the MMMs efficiently facilitated the transport of adsorbed CO2 across the membranes. As a result, the obtained PIM-Py-Ac-15 MMM exhibited an excellent permeability for CO2 of 6205 barrer and a CO2/N2 and CO2/CH4 selectivity of 62.5 and 56.1, respectively, far surpassing the 2008 Robeson upper bound and exceeding most of the reported advanced membranes. As a divertive of PIPs, this work opens a window for designing and fabricating promising MMMs for task-specific membrane separations.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 Elsevier. |
Keywords: | Mixed matrix membranes; Porous ionic polymer; PIM-1; CO2 separation; Pyridine-based porous ionic polymer |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Chemical and Biological Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 28 May 2020 07:23 |
Last Modified: | 28 May 2020 07:23 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.memsci.2019.117677 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:161252 |