Electric field-driven assembly of (110) oriented metal–organic framework ZIF-8 monolayer with high hydrogen selectivity

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Chunxin Jin
  • Shuai Liu
  • Rui Zheng
  • Yanhong Li
  • Xiaofang Chen
  • Jürgen Caro
  • Jianwen Jiang
  • Aisheng Huang

External Research Organisations

  • East China Normal University
  • National University of Singapore
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Details

Original languageEnglish
Article number155773
JournalChemical engineering journal
Volume498
Early online date14 Sept 2024
Publication statusPublished - 15 Oct 2024

Abstract

Metal-organic framework (MOF) membranes have showed great potential in gas separation. To date, it is still a great challenge to precisely control the optimal orientation of MOF membranes with an enhanced gas separation performance. Herein, we prepared a compact and (110) oriented ZIF-8 membrane with a thickness of about 265 nm on graphite substrate within 1 h at room temperature via electric-field-driven strategy. Since the membrane is an intergrown one-crystal layer, grain boundary retardation of the flux is eliminated. Furthermore, due to the reduction of the transport pathways through the oriented structure, the (110) oriented ZIF-8 membrane exhibits a high gas separation performance. At 100 °C and 1 bar for the separation of equimolar binary gas mixtures H2/CO2, H2/CH4 and H2/C3H8, separation factors of 49.5, 90.9 and 121.8 can be obtained, with H2 permeance of about 1.7 × 10-7 mol·m−2·s−1·Pa−1. The developed strategy exhibits excellent reproducibility and scalability, and a large area ZIF-8 membrane can be consistently prepared on the graphite substrate, thus facilitating the preparation and application of the ZIF-8 membrane on a large scale. Further, the electric-field-driven strategy is also helpful for the preparation oriented ZIF-67 and ZIF-L membranes, confirming its versatility for the preparation of oriented MOF membranes.

Keywords

    Electric-field-driven strategy, Hydrogen separation, Metal-organic frameworks membranes, Oriented ZIF-8 membrane

ASJC Scopus subject areas

Cite this

Electric field-driven assembly of (110) oriented metal–organic framework ZIF-8 monolayer with high hydrogen selectivity. / Jin, Chunxin; Liu, Shuai; Zheng, Rui et al.
In: Chemical engineering journal, Vol. 498, 155773, 15.10.2024.

Research output: Contribution to journalArticleResearchpeer review

Jin C, Liu S, Zheng R, Li Y, Chen X, Caro J et al. Electric field-driven assembly of (110) oriented metal–organic framework ZIF-8 monolayer with high hydrogen selectivity. Chemical engineering journal. 2024 Oct 15;498:155773. Epub 2024 Sept 14. doi: 10.1016/j.cej.2024.155773
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AU - Liu, Shuai

AU - Zheng, Rui

AU - Li, Yanhong

AU - Chen, Xiaofang

AU - Caro, Jürgen

AU - Jiang, Jianwen

AU - Huang, Aisheng

N1 - Publisher Copyright: © 2024

PY - 2024/10/15

Y1 - 2024/10/15

N2 - Metal-organic framework (MOF) membranes have showed great potential in gas separation. To date, it is still a great challenge to precisely control the optimal orientation of MOF membranes with an enhanced gas separation performance. Herein, we prepared a compact and (110) oriented ZIF-8 membrane with a thickness of about 265 nm on graphite substrate within 1 h at room temperature via electric-field-driven strategy. Since the membrane is an intergrown one-crystal layer, grain boundary retardation of the flux is eliminated. Furthermore, due to the reduction of the transport pathways through the oriented structure, the (110) oriented ZIF-8 membrane exhibits a high gas separation performance. At 100 °C and 1 bar for the separation of equimolar binary gas mixtures H2/CO2, H2/CH4 and H2/C3H8, separation factors of 49.5, 90.9 and 121.8 can be obtained, with H2 permeance of about 1.7 × 10-7 mol·m−2·s−1·Pa−1. The developed strategy exhibits excellent reproducibility and scalability, and a large area ZIF-8 membrane can be consistently prepared on the graphite substrate, thus facilitating the preparation and application of the ZIF-8 membrane on a large scale. Further, the electric-field-driven strategy is also helpful for the preparation oriented ZIF-67 and ZIF-L membranes, confirming its versatility for the preparation of oriented MOF membranes.

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