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

Autor:	Younghan Song, Kyung Youl Baek, Sangho Cho, Jin Young Seo, Hyungsup Kim, Jung Hyun Lee
Rok vydání:	2021
Předmět:	chemistry.chemical_compound Aqueous solution Materials science chemistry Nanofiber Composite number Degradation (geology) General Materials Science Aerogel Cellulose Composite material Catalysis Nanocellulose
Zdroj:	ACS Applied Materials & Interfaces. 13:33516-33523
ISSN:	1944-8252 1944-8244
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c64c886283d42093f7832ce9bfd9a6e2 https://doi.org/10.1021/acsami.1c08138 Zobrazit plný text záznamu