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Protection against Chemical Warfare Agents and Biological Threats Using Metal−Organic Frameworks as Active Layers

Accounts of Materials Research 2023年第2期4卷 168-179页

作者： Kaikai Ma Yuk Ha Cheung Kent O.Kirlikovali Xiaoliang Wang timur islamoglu John H.Xin Omar K.Farha International Institute for Nanotechnology Institute for Sustainability and Energy at Northwesternand Department of ChemistryNorthwestern UniversityEvanstonIllinois 60208United States Research Centre for Smart Wearable Technology School of Fashion and TextilesThe Hong Kong Polytechnic UniversityKowloon 999077 Hong Kong SARP.R.China

The SARS-CoV-2 pandemic outbreak and the unfortunate misuse of toxic chemical warfare agents(CWAs)highlight the importance of developing functional materials to protect against these chemical and pathogen ***−organic frameworks(MOFs),which comprise a tunable class of crystalline porous materials built from inorganic nodes and organic linkers,have emerged as a class of heterogeneous catalysts capable of rapid detoxification of multiple classes of these harmful chemical or biological *** particular,zirconium-based MOFs(Zr-MOFs)feature Lewis acidic nodes that serve as active sites for a wide range of catalytic reactions,including the hydrolysis of organophosphorus nerve agents within seconds in basic aqueous *** addition,postsynthetic modification of Zr-MOFs enables the release of active species capable of reacting with and deactivating harmful *** this impressive performance,utilizing Zr-MOFs in powder form is not practical for application in masks or protective *** address this challenge,our team sought to develop MOF/fiber composite systems that could be adapted for use under realistic operating conditions to protect civilians,military personnel,and first responders from harmful pathogens and chemical warfare *** the last several years,our group has designed and fabricated reactive and biocidal MOF/fiber composites that effectively capture and deactivate these toxic *** this Account,we describe the evolution of these porous and reactive MOF/fiber composites and focus on key design challenges and ***,we devised a scalable method for the integration of Zr-MOFs onto textile substrates using aqueous precursor solutions and without using pretreated textiles,highlighting the potential scalability of this *** beyond standard textiles,we also developed a microbial synthesis strategy to prepare hierarchically porous MOF/bacterial cellulose nanofiber composite sponges that can both captu

关键词： composites protective porous

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