Pore-in-Pore Engineering in a Covalent Organic Framework Membrane for Gas Separation

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Hongwei Fan
  • Haoran Wang
  • Manhua Peng
  • Hong Meng
  • Alexander Mundstock
  • Alexander Knebel
  • Jürgen Caro

Externe Organisationen

  • Beijing University of Chemical Technology
  • North China Electric Power University (NCEPU)
  • Friedrich-Schiller-Universität Jena
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)7584-7594
Seitenumfang11
FachzeitschriftACS NANO
Jahrgang17
Ausgabenummer8
Frühes Online-Datum7 Apr. 2023
PublikationsstatusVeröffentlicht - 25 Apr. 2023

Abstract

Covalent organic framework (COF) membranes have emerged as a promising candidate for energy-efficient separations, but the angstrom-precision control of the channel size in the subnanometer region remains a challenge that has so far restricted their potential for gas separation. Herein, we report an ultramicropore-in-nanopore concept of engineering matreshka-like pore-channels inside a COF membrane. In this concept, α-cyclodextrin (α-CD) is in situ encapsulated during the interfacial polymerization which presumably results in a linear assembly (LA) of α-CDs in the 1D nanochannels of COF. The LA-α-CD-in-TpPa-1 membrane shows a high H2 permeance (∼3000 GPU) together with an enhanced selectivity (>30) of H2 over CO2 and CH4 due to the formation of fast and selective H2-transport pathways. The overall performance for H2/CO2 and H2/CH4 separation transcends the Robeson upper bounds and ranks among the most powerful H2-selective membranes. The versatility of this strategy is demonstrated by synthesizing different types of LA-α-CD-in-COF membranes.

Zitieren

Pore-in-Pore Engineering in a Covalent Organic Framework Membrane for Gas Separation. / Fan, Hongwei; Wang, Haoran; Peng, Manhua et al.
in: ACS NANO, Jahrgang 17, Nr. 8, 25.04.2023, S. 7584-7594.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Fan, H, Wang, H, Peng, M, Meng, H, Mundstock, A, Knebel, A & Caro, J 2023, 'Pore-in-Pore Engineering in a Covalent Organic Framework Membrane for Gas Separation', ACS NANO, Jg. 17, Nr. 8, S. 7584-7594. https://doi.org/10.1021/acsnano.2c12774
Fan, H., Wang, H., Peng, M., Meng, H., Mundstock, A., Knebel, A., & Caro, J. (2023). Pore-in-Pore Engineering in a Covalent Organic Framework Membrane for Gas Separation. ACS NANO, 17(8), 7584-7594. https://doi.org/10.1021/acsnano.2c12774
Fan H, Wang H, Peng M, Meng H, Mundstock A, Knebel A et al. Pore-in-Pore Engineering in a Covalent Organic Framework Membrane for Gas Separation. ACS NANO. 2023 Apr 25;17(8):7584-7594. Epub 2023 Apr 7. doi: 10.1021/acsnano.2c12774
Fan, Hongwei ; Wang, Haoran ; Peng, Manhua et al. / Pore-in-Pore Engineering in a Covalent Organic Framework Membrane for Gas Separation. in: ACS NANO. 2023 ; Jahrgang 17, Nr. 8. S. 7584-7594.
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abstract = "Covalent organic framework (COF) membranes have emerged as a promising candidate for energy-efficient separations, but the angstrom-precision control of the channel size in the subnanometer region remains a challenge that has so far restricted their potential for gas separation. Herein, we report an ultramicropore-in-nanopore concept of engineering matreshka-like pore-channels inside a COF membrane. In this concept, α-cyclodextrin (α-CD) is in situ encapsulated during the interfacial polymerization which presumably results in a linear assembly (LA) of α-CDs in the 1D nanochannels of COF. The LA-α-CD-in-TpPa-1 membrane shows a high H2 permeance (∼3000 GPU) together with an enhanced selectivity (>30) of H2 over CO2 and CH4 due to the formation of fast and selective H2-transport pathways. The overall performance for H2/CO2 and H2/CH4 separation transcends the Robeson upper bounds and ranks among the most powerful H2-selective membranes. The versatility of this strategy is demonstrated by synthesizing different types of LA-α-CD-in-COF membranes.",
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note = "Funding Information: This work was supported by the German Science Foundation (DFG) within the Priority Program SPP 1928/2, National Natural Science Foundation of China (Program No. 22108010), Fundamental Research Funds for the Central Universities (buctrc202135), and Alexander von Humboldt Foundation.",
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T1 - Pore-in-Pore Engineering in a Covalent Organic Framework Membrane for Gas Separation

AU - Fan, Hongwei

AU - Wang, Haoran

AU - Peng, Manhua

AU - Meng, Hong

AU - Mundstock, Alexander

AU - Knebel, Alexander

AU - Caro, Jürgen

N1 - Funding Information: This work was supported by the German Science Foundation (DFG) within the Priority Program SPP 1928/2, National Natural Science Foundation of China (Program No. 22108010), Fundamental Research Funds for the Central Universities (buctrc202135), and Alexander von Humboldt Foundation.

PY - 2023/4/25

Y1 - 2023/4/25

N2 - Covalent organic framework (COF) membranes have emerged as a promising candidate for energy-efficient separations, but the angstrom-precision control of the channel size in the subnanometer region remains a challenge that has so far restricted their potential for gas separation. Herein, we report an ultramicropore-in-nanopore concept of engineering matreshka-like pore-channels inside a COF membrane. In this concept, α-cyclodextrin (α-CD) is in situ encapsulated during the interfacial polymerization which presumably results in a linear assembly (LA) of α-CDs in the 1D nanochannels of COF. The LA-α-CD-in-TpPa-1 membrane shows a high H2 permeance (∼3000 GPU) together with an enhanced selectivity (>30) of H2 over CO2 and CH4 due to the formation of fast and selective H2-transport pathways. The overall performance for H2/CO2 and H2/CH4 separation transcends the Robeson upper bounds and ranks among the most powerful H2-selective membranes. The versatility of this strategy is demonstrated by synthesizing different types of LA-α-CD-in-COF membranes.

AB - Covalent organic framework (COF) membranes have emerged as a promising candidate for energy-efficient separations, but the angstrom-precision control of the channel size in the subnanometer region remains a challenge that has so far restricted their potential for gas separation. Herein, we report an ultramicropore-in-nanopore concept of engineering matreshka-like pore-channels inside a COF membrane. In this concept, α-cyclodextrin (α-CD) is in situ encapsulated during the interfacial polymerization which presumably results in a linear assembly (LA) of α-CDs in the 1D nanochannels of COF. The LA-α-CD-in-TpPa-1 membrane shows a high H2 permeance (∼3000 GPU) together with an enhanced selectivity (>30) of H2 over CO2 and CH4 due to the formation of fast and selective H2-transport pathways. The overall performance for H2/CO2 and H2/CH4 separation transcends the Robeson upper bounds and ranks among the most powerful H2-selective membranes. The versatility of this strategy is demonstrated by synthesizing different types of LA-α-CD-in-COF membranes.

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