Broadening the Gas Separation Utility of Monolayer Nanoporous Graphene Membranes by an Ionic Liquid Gating

Guo, Wei; Mahurin, Shannon Mark; Unocic, Raymond; Luo, Huimin; Dai, Sheng

doi:10.1021/acs.nanolett.0c02860

Title: Broadening the Gas Separation Utility of Monolayer Nanoporous Graphene Membranes by an Ionic Liquid Gating

Abstract

Ultrathin two-dimensional (2D) monolayer atomic crystal materials offer great potential for extending the field of novel separation technology due to their infinitesimal thickness and mechanical strength. One difficult and ongoing challenge is to perforate the 2D monolayer material with subnanometer pores with atomic precision for sieving similarly sized molecules. Here, we demonstrate the exceptional separation performance of ionic liquid (IL)/graphene hybrid membranes for challenging separation of CO₂ and N₂. Notably, the ultrathin ILs afford dynamic tuning of the size and chemical affinity of nanopores while preserving the high permeance of the monolayer nanoporous graphene membranes. The hybrid membrane yields a high CO₂ permeance of 4000 GPU and an outstanding CO₂/N₂ selectivity up to 32. Finally, this rational hybrid design provides a universal direction for broadening gas separation capability of atomically thin nanoporous membranes.

Authors:

Guo, Wei ^[1];

^[2];

^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Fri Oct 16 00:00:00 EDT 2020

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division

OSTI Identifier:: 1756247

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Nano Letters

Additional Journal Information:: Journal Volume: 20; Journal Issue: 11; Journal ID: ISSN 1530-6984

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 77 NANOSCIENCE AND NANOTECHNOLOGY; nanoporous graphene; gas separation; ultrathin membrane; ionic liquid

Citation Formats


                    Guo, Wei, Mahurin, Shannon Mark, Unocic, Raymond, Luo, Huimin, and Dai, Sheng. Broadening the Gas Separation Utility of Monolayer Nanoporous Graphene Membranes by an Ionic Liquid Gating.  United States: N. p., 2020. 
Web.  doi:10.1021/acs.nanolett.0c02860.

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                    Guo, Wei, Mahurin, Shannon Mark, Unocic, Raymond, Luo, Huimin, & Dai, Sheng. Broadening the Gas Separation Utility of Monolayer Nanoporous Graphene Membranes by an Ionic Liquid Gating.  United States.  https://doi.org/10.1021/acs.nanolett.0c02860

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                    Guo, Wei, Mahurin, Shannon Mark, Unocic, Raymond, Luo, Huimin, and Dai, Sheng. Fri .  
"Broadening the Gas Separation Utility of Monolayer Nanoporous Graphene Membranes by an Ionic Liquid Gating".  United States.  https://doi.org/10.1021/acs.nanolett.0c02860.  https://www.osti.gov/servlets/purl/1756247.

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@article{osti_1756247,

  title        = {Broadening the Gas Separation Utility of Monolayer Nanoporous Graphene Membranes by an Ionic Liquid Gating},

  author       = {Guo, Wei and Mahurin, Shannon Mark and Unocic, Raymond and Luo, Huimin and Dai, Sheng},

  abstractNote = {Ultrathin two-dimensional (2D) monolayer atomic crystal materials offer great potential for extending the field of novel separation technology due to their infinitesimal thickness and mechanical strength. One difficult and ongoing challenge is to perforate the 2D monolayer material with subnanometer pores with atomic precision for sieving similarly sized molecules. Here, we demonstrate the exceptional separation performance of ionic liquid (IL)/graphene hybrid membranes for challenging separation of CO2 and N2. Notably, the ultrathin ILs afford dynamic tuning of the size and chemical affinity of nanopores while preserving the high permeance of the monolayer nanoporous graphene membranes. The hybrid membrane yields a high CO2 permeance of 4000 GPU and an outstanding CO2/N2 selectivity up to 32. Finally, this rational hybrid design provides a universal direction for broadening gas separation capability of atomically thin nanoporous membranes.},

  doi          = {10.1021/acs.nanolett.0c02860},

  journal      = {Nano Letters},

  number       = 11,

  volume       = 20,

  place        = {United States},

  year         = {Fri Oct 16 00:00:00 EDT 2020},

  month        = {Fri Oct 16 00:00:00 EDT 2020}

}

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Title: Broadening the Gas Separation Utility of Monolayer Nanoporous Graphene Membranes by an Ionic Liquid Gating

Abstract

Citation Formats

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