Shaping of a Metal-Organic Framework-Polymer Composite and Its CO2Adsorption Performances from Humid Indoor Air

Jinkyoung Park, Yun Seok Chae, Dong Won Kang, Minjung Kang, Jong Hyeak Choe, Saemi Kim, Jee Yeon Kim, Yong Won Jeong, Chang Seop Hong

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Diamine-functionalized metal-organic frameworks (MOFs) are known as desirable adsorbents that can capture CO2 even at low pressures, but the humidity instability of bare MOF powders as well as their shaping have not yet adequately addressed for practical applications. Herein, we report an effective synthetic strategy for fabricating millimeter-sized MOF/poly(vinylidene fluoride) (PVDF) composite beads with different amounts of PVDF binders (30, 40, and 50 wt %) via a phase inversion method, followed by the postfunctionalization of 1-ethylpropane-1,3-diamine (epn). Compared with the pristine MOF powder, the diamine-grafted bead, epn-MOF/PVDF40, upon mixing with 40% binder polymers, exhibited a superior long-term performance without structural collapse for up to 1 month. The existence of the hydrophobic PVDF polymer in the composite material is responsible for such durability. This work provides a promising preparative route toward developing stable and shaped MOFs for the removal of indoor CO2.

Original languageEnglish
Pages (from-to)25421-25427
Number of pages7
JournalACS Applied Materials and Interfaces
Volume13
Issue number21
DOIs
Publication statusPublished - 2021 Jun 2

Keywords

  • MOF shaping
  • composite materials
  • diamine functionalization
  • indoor air capture
  • metal-organic framework

ASJC Scopus subject areas

  • Materials Science(all)

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