title: Ultra-Fast Degradation of Chemical Warfare Agents Using MOF-Nanofiber Kebabs.
abstract: The threat associated with chemical warfare agents (CWAs) motivates the development of new materials to provide enhanced protection with a reduced burden. Metal-organic frame-works (MOFs) have recently been shown as highly effective catalysts for detoxifying CWAs, but challenges still remain for integrating MOFs into functional filter media and/or protective garments. Herein, we report a series of MOF-nanofiber kebab structures for fast degradation of CWAs. We found TiO2coatings deposited via atomic layer deposition (ALD) onto polyamide-6 nanofibers enable the formation of conformal Zr-based MOF thin films including UiO-66, UiO-66-NH2, and UiO-67. Cross-sectional TEM images show that these MOF crystals nucleate and grow directly on and around the nanofibers, with strong attachment to the substrates. These MOF-functionalized nanofibers exhibit excellent reactivity for detoxifying CWAs. The half-lives of a CWA simulant compound and nerve agent soman (GD) are as short as 7.3 min and 2.3 min, respectively. These results therefore provide the earliest report of MOF-nanofiber textile composites capable of ultra-fast degradation of CWAs.
authors.affiliation: Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC, 27695, USA.
authors.forename: Junjie
authors.initials: J
authors.lastname: Zhao
authors.affiliation: Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC, 27695, USA.
authors.forename: Dennis T
authors.initials: DT
authors.lastname: Lee
authors.affiliation: RTI International, 3040 East Cornwallis Road, Research Triangle Park, NC, 27709, USA.
authors.forename: Robert W
authors.initials: RW
authors.lastname: Yaga
authors.affiliation: Edgewood Chemical Biological Center, 5183 Blackhawk Road, Aberdeen Proving Ground, MD, 21010, USA.
authors.forename: Morgan G
authors.initials: MG
authors.lastname: Hall
authors.affiliation: Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC, 27695, USA.
authors.forename: Heather F
authors.initials: HF
authors.lastname: Barton
authors.affiliation: Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC, 27695, USA.
authors.forename: Ian R
authors.initials: IR
authors.lastname: Woodward
authors.affiliation: Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC, 27695, USA.
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Oldham
authors.affiliation: RTI International, 3040 East Cornwallis Road, Research Triangle Park, NC, 27709, USA.
authors.forename: Howard J
authors.initials: HJ
authors.lastname: Walls
authors.affiliation: Edgewood Chemical Biological Center, 5183 Blackhawk Road, Aberdeen Proving Ground, MD, 21010, USA. gregory.w.peterson.civ@mail.mil.
authors.forename: Gregory W
authors.initials: GW
authors.lastname: Peterson
authors.affiliation: Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC, 27695, USA. gnp@ncsu.edu.
authors.forename: Gregory N
authors.initials: GN
authors.lastname: Parsons
keywords: atomic layer deposition; chemical warfare agents; metal-organic frameworks; nanofibers; thin films