Robust Nanocellulose/Metal-Organic Framework Aerogel Composites: Superior Performance for Static and Continuous Disposal of Chemical Warfare Agent Simulants
- Authors
- Seo, Jin Young; Song, Younghan; Lee, Jung-Hyun; Kim, Hyungsup; Cho, Sangho; Baek, Kyung-Youl
- Issue Date
- 21-7월-2021
- Publisher
- AMER CHEMICAL SOC
- Keywords
- TEMPO-oxidized cellulose nanofiber; aerogel composite; chemical warfare agents; detoxification; metal-organic framework
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.13, no.28, pp.33516 - 33523
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 13
- Number
- 28
- Start Page
- 33516
- End Page
- 33523
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/137111
- DOI
- 10.1021/acsami.1c08138
- ISSN
- 1944-8244
- 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 m(2) 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 m(2) of the effective area.
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