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

Research output: Contribution to journalArticlepeer-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

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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