Layer-by-Layer Integration of Zirconium Metal-Organic Frameworks onto Activated Carbon Spheres and Fabrics with Model Nerve Agent Detoxification Properties

Rodrigo Gil-San-Millan; Pedro Delgado; Elena Lopez-Maya; Javier D Martin-Romera; Elisa Barea; Jorge A R Navarro

doi:10.1021/acsami.1c12095

Layer-by-Layer Integration of Zirconium Metal-Organic Frameworks onto Activated Carbon Spheres and Fabrics with Model Nerve Agent Detoxification Properties

ACS Appl Mater Interfaces. 2021 Oct 27;13(42):50491-50496. doi: 10.1021/acsami.1c12095. Epub 2021 Oct 13.

Authors

Rodrigo Gil-San-Millan¹, Pedro Delgado¹, Elena Lopez-Maya¹, Javier D Martin-Romera¹, Elisa Barea¹, Jorge A R Navarro¹

Affiliation

¹ Departamento de Química Inorgánica, Universidad de Granada, Av. Fuentenueva S/N, 18071 Granada, Spain.

Abstract

We report the controlled synthesis of thin films of prototypical zirconium metal-organic frameworks [Zr₆O₄(OH)₄(benzene-1,4-dicarboxylate-2-X)₆] (X = H, UiO-66 and X = NH₂, UiO-66-NH₂) over the external surface of shaped carbonized substrates (spheres and textile fabrics) using a layer-by-layer method. The resulting composite materials contain metal-organic framework (MOF) crystals homogeneously distributed over the external surface of the porous shaped bodies, which are able to capture an organophosphate nerve agent simulant (diisopropylfluorophosphate, DIFP) in competition with moisture (very fast) and hydrolyze the P-F bond (slow). This behavior confers the composite material self-cleaning properties, which are useful for blocking secondary emission problems of classical protective equipment based on activated carbon.

Keywords: chemical warfare agent; composite; filter; heterogeneous catalysis; protective garments; thin film.