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Ultramicroporous hydrogen-bond decorated robust metal-organic framework for high xenon capture performances

  • Minjung Kang
  • , Jong Hyeak Choe
  • , Hyojin Kim
  • , Hongryeol Yun
  • , Dae Won Kim
  • , Chang Seop Hong*
  • *Corresponding author for this work

    Research output: Contribution to journal › Article › peer-review

    Abstract

    Despite efforts to isolate industrially valuable Xe (xenon) and Kr (krypton), porous materials that satisfy high selectivity and uptake and the proper structural integrity in wet environments remain underdeveloped. We report an ultramicroporous metal-organic framework (MOF), Ni(AIN)2 (HAIN = 3-aminoisonicotinic acid), which is favorable for the preferential adsorption of Xe. Notably, the amino groups form intra- and inter-net hydrogen bonds within the Ni(AIN)2 structure, imparting structural stability even under wet conditions. Henry's selectivity and the Xe uptake at 0.2 bar were respectively 23.19 and 57.33 cm3 g−1, falling into an ideal performance regime. Breakthrough experiments showed that under dry and humid conditions, the dynamic separation efficiency of Ni(AIN)2 was maintained without any structural collapse. Thus, we provide a feasible design strategy for MOF adsorbents to achieve the desired Xe uptake, Xe/Kr selectivity, and structural stability.

    Original languageEnglish
    Pages (from-to)24824-24830
    Number of pages7
    JournalJournal of Materials Chemistry A
    Volume10
    Issue number46
    DOIs
    Publication statusPublished - 2022 Nov 17

    Bibliographical note

    Funding Information:
    This work was supported by the National Research Foundation of Korea (NRF-2021R1A2B5B03086313) and the Priority Research Centers Program (NRF-2019R1A6A1A11044070). The X-ray crystallographic data was collected at the Pohang Accelerator Laboratory (PLS-II BL2D SMC).

    Publisher Copyright:
    © 2022 The Royal Society of Chemistry.

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 7 - Affordable and Clean Energy
      SDG 7 Affordable and Clean Energy

    ASJC Scopus subject areas

    • General Chemistry
    • Renewable Energy, Sustainability and the Environment
    • General Materials Science

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