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Permeable Self-Association of Metal-Organic Framework 808/Ag-Based Fiber Membrane for Broad-Spectrum and Highly Efficient Degradation of Biological and Chemical War Agents. | LitMetric

AI Article Synopsis

  • The study emphasizes the urgent need for innovative protective clothing against biological and chemical warfare agents due to their threats to national security and health.
  • Researchers introduced a new method to immobilize metal-organic frameworks and silver nanoparticles onto polypropylene fibers, enhancing the degradation efficiency of harmful simulants.
  • The resulting composite fiber not only exceeds existing standards for protective clothing in terms of strength and moisture permeability but also shows great potential for future applications in bioprotective gear.

Article Abstract

The threat posed by biological and chemical warfare agents (BCWA) to national security, the environment, and personal health underscores the need for innovative chemical protective clothing. To address the limitations of conventional activated carbon materials, which are prone to falling off and adsorption saturation, an efficient self-association approach was introduced. In this study, we proposed the immobilization of metal-organic framework (MOF) 808 and Ag nanoparticles onto a polypropylene (PP) fiber membrane using a rapid self-association method facilitated by chitosan (CS). The MOF 808/Ag-based (PP-CS/808-Ag) fiber membrane demonstrated exceptional degradation efficiency, achieving a remarkable rate of within 2 h for the mustard simulant 2-chloroethyl ethyl sulfide (2-CEES) and a rate of = 4.12 min for the G-series simulant dimethyl 4-nitrophenylphosphate (DMNP). A theoretical computational model was developed to determine the overall reaction mechanism, and it was verified that MOF 808 and Ag nanoparticles were mainly involved in the hydrolysis process against 2-CEES and DMNP. The PP-CS/808-Ag composite fiber film was prepared as the core layer, and the fracture strength, bending resistance, and moisture permeability were better than those specified by many countries for biochemical protective clothing, showing that it has a broad application prospect in developing a generation of broad-spectrum bioprotective clothing.

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Source
http://dx.doi.org/10.1021/acsami.4c07149DOI Listing

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