Volume 133, Issue 11 pp. 5928-5934
Zuschrift

Analogous Mixed Matrix Membranes with Self-Assembled Interface Pathways

Dr. Haozhen Dou

Dr. Haozhen Dou

Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, Ontario, N2L 3G1 Canada

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Dr. Mi Xu

Dr. Mi Xu

Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, Ontario, N2L 3G1 Canada

School of Chemical Engineering and Technology, Collaborative Innovation Centre of Chemical Science and Engineering, Key Laboratory for Green Chemical Technology of Ministry of Education, Tianjin University, Tianjin, 300350 China

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Prof. Baoyu Wang

Prof. Baoyu Wang

School of Chemical Engineering and Food Science, Zhengzhou University of Technology, Zhengzhou, 450044 China

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Dr. Zhen Zhang

Dr. Zhen Zhang

Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, Ontario, N2L 3G1 Canada

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Dr. Dan Luo

Dr. Dan Luo

Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, Ontario, N2L 3G1 Canada

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Dr. Benbing Shi

Dr. Benbing Shi

School of Chemical Engineering and Technology, Collaborative Innovation Centre of Chemical Science and Engineering, Key Laboratory for Green Chemical Technology of Ministry of Education, Tianjin University, Tianjin, 300350 China

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Dr. Guobin Wen

Dr. Guobin Wen

Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, Ontario, N2L 3G1 Canada

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Dr. Mahboubeh Mousavi

Dr. Mahboubeh Mousavi

Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, Ontario, N2L 3G1 Canada

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Prof. Aiping Yu

Prof. Aiping Yu

Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, Ontario, N2L 3G1 Canada

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Prof. Zhengyu Bai

Prof. Zhengyu Bai

School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Henan Normal University, Xinxiang, 453007 China

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Prof. Zhongyi Jiang

Corresponding Author

Prof. Zhongyi Jiang

School of Chemical Engineering and Technology, Collaborative Innovation Centre of Chemical Science and Engineering, Key Laboratory for Green Chemical Technology of Ministry of Education, Tianjin University, Tianjin, 300350 China

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Prof. Zhongwei Chen

Corresponding Author

Prof. Zhongwei Chen

Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, Ontario, N2L 3G1 Canada

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First published: 10 November 2020
Citations: 3

Abstract

The implementation of mixed matrix membranes (MMMs) for sub-angstrom scale gas separations remains a grand challenge. Herein, a series of analogous mixed matrix membrane (AMMMs) were constructed via molecular-level hybridization by utilizing a reactive ionic liquid (RIL) as the continuous phase and graphene quantum dots (GQD) as nanofiller for sub-angstrom scale ethylene/ethane (0.416 nm/0.443 nm) separation. With a small number of GQDs (3.5 wt%) embedded in GQD/RIL AMMMs, ethylene permeability soared by 3.1-fold, and ethylene/ethane selectivity simultaneously boosted by nearly 60 % and reached up to 99.5, which outperformed most previously reported state-of-the-art membranes. Importantly, the interfacial pathway structure was visualized and their self-assembly mechanism was revealed, where the non-covalent interactions between RIL and GQDs induced the local arrangement of IL chains to self-assemble into plenty of compact and superfast interfacial pathways, contributing to the combination of superhigh permeability and selectivity.

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