Metal-Organic Framework Adsorbent for Practical Capture of Trace Carbon Dioxide

Jinkyoung Park, Jeoung Ryul Park, Jong Hyeak Choe, Saemi Kim, Minjung Kang, Dong Won Kang, Jee Yeon Kim, Yong Won Jeong, Chang Seop Hong

Research output: Contribution to journalArticlepeer-review

Abstract

Control of indoor CO2 concentration to a safe level is important to human health. Metal-organic-framework-based adsorbents show superior adsorption performance at moderate CO2 concentration compared to other solid adsorbents but suffer from low capacities and high regeneration temperature at indoor CO2 concentrations and poor humidity stability. Herein, we report epn-grafted Mg2(dobpdc) (epn = 1-ethylpropane-1,3-diamine) showing a CO2 capacity of 12.2 wt % at an acceptable concentration of 1000 ppm and a practically low desorption temperature of 70 °C, which surpasses the performance of conventional solid adsorbents under the given conditions. After poly(dimethylsiloxane) coating, this material reveals a significant adsorption amount (∼10 wt %) in humid conditions (up to 98% relative humidity) with structural durability.

Original languageEnglish
Pages (from-to)50534-50540
Number of pages7
JournalACS Applied Materials and Interfaces
Volume12
Issue number45
DOIs
Publication statusPublished - 2020 Nov 11

Keywords

  • PDMS coating
  • amine functionalization
  • indoor air capture
  • metal-organic framework
  • ultra-microproliferation

ASJC Scopus subject areas

  • Materials Science(all)

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