Robust Nanocellulose/Metal-Organic Framework Aerogel Composites: Superior Performance for Static and Continuous Disposal of Chemical Warfare Agent Simulants

Jin Young Seo, Younghan Song, Jung Hyun Lee, Hyungsup Kim, Sangho Cho, Kyung Youl Baek

    Research output: Contribution to journalArticlepeer-review

    33 Citations (Scopus)

    Abstract

    Environment-friendly and robust nanocellulose/metal-organic framework aerogel composites were prepared for effective detoxification of chemical warfare agent simulants both in static and dynamic continuous flow systems. For this, we fabricated a durable porous composite of the UiO-66 catalyst and TEMPO-oxidized cellulose nanofibers (TOCN) to examine as a detoxification filter. Even with over 50 wt % UiO-66, the obtained cellulose aerogel composites exhibited high stability without leaking of UiO-66 for 4 weeks under an aqueous state. The cellulose aerogel composite with 54 wt % UiO-66 showed a quite high surface area (483 m2 g-1) despite the presence of TOCN, which caused fast degradation of methyl paraoxon (MPO), a nerve agent simulant, with a 0.7 min half-life in an aqueous solution with N-ethylmorpholine buffer. This aerogel composite was then examined as the detoxification filter in the continuous flow system under a 7.2 mL h-1 flow rate, which surprisingly decomposed 53.7 g of MPO within 1 h with 1 m2 of the effective area.

    Original languageEnglish
    Pages (from-to)33516-33523
    Number of pages8
    JournalACS Applied Materials and Interfaces
    Volume13
    Issue number28
    DOIs
    Publication statusPublished - 2021 Jul 21

    Bibliographical note

    Funding Information:
    This work was supported by the Korea Environment Industry & Technology Institute (KEITI) through the Ecological Imitation-based Environmental Pollution Management Technology Development Project, funded by the Korea Ministry of Environment (MOE) (no. 2021002800005), and partially supported by the Korea Institute of Science and Technology (KIST) Future R&D program (#2E31181).

    Publisher Copyright:
    © 2021 American Chemical Society.

    Keywords

    • TEMPO-oxidized cellulose nanofiber
    • aerogel composite
    • chemical warfare agents
    • detoxification
    • metal-organic framework

    ASJC Scopus subject areas

    • General Materials Science

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