Ultra‐Fast Degradation of Chemical Warfare Agents Using MOF–Nanofiber Kebabs. Issue 42 (6th October 2016)

• Record Type: Journal Article
• Authors: Zhao, Junjie; Lee, Dennis T.; Yaga, Robert W.; Hall, Morgan G.; Barton, Heather F.; Woodward, Ian R.; Oldham, Christopher J.; Walls, Howard J.; Peterson, Gregory W.; Parsons, Gregory N.
• Is Part Of: Angewandte Chemie international edition. Volume 55:Issue 42(2016)
• Page Start: 13224
• Page End: 13228
• Publication Date: 2016-10-06
• Subjects: atomic layer deposition -- chemical warfare agents -- metal–organic frameworks -- nanofibers -- thin films; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201606656
• Languages: English
• ISSNs: 1433-7851

Abstract

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 TiO2 coatings 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. Abstract : Skewering nerve agents : Conformal metal–organic framework (MOF) kebab structures decorated on nanofibers that can degrade chemical warfare agents within minutes are described. These MOF–nanofiber composites show excellent reactivity towards both simulant and nerve agent soman (GD).