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 language | English |
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Pages (from-to) | 33516-33523 |
Number of pages | 8 |
Journal | ACS Applied Materials and Interfaces |
Volume | 13 |
Issue number | 28 |
DOIs | |
Publication status | Published - 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