Current events have increased awareness of the threat that chemical warfare agents (CWAs) pose to the warfighter and civilian populations. Advances in material design for filtration, warfighter uniforms, and decontamination solutions have become increasingly necessary to protect the warfighter from CWA exposure. Here we have evaluated a number of promising materials including metal oxides, hydroxides, and metal organic frameworks (MOFs) varying in pore size against the nerve agent, Sarin (GB). We found partial GB decomposition occurs on all of these materials, with strong bidentate product species formation. Additionally, both structural and environmental factors play a role in GB decomposition on the surface. For example, GB capacity increases with increasing porosity; while, linker exchange increases GB decomposition. Environmental contaminants such as NO<sub>2</sub>(g) also affect GB adsorption onto the surface. These CWA interactions with the surface are observed in-situ using several spectroscopy techniques such as transmission infrared spectroscopy (TIR), diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), X-ray photoelectron spectroscopy (XPS), and Microbreakthrough experiments. These studies will facilitate the determination of design parameters governing adsorption, diffusion, and decomposition in advanced nanoporous materials.

Spectroscopic investigations of sarin adsorption and decomposition on metal oxides, metal hydroxides, and metal organic frameworks under vacuum and ambient conditions

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.