Friday, May 3, 2019, 12:00 pm — NSLS-II Bldg. 743 Room 156
Effective filters for the rapid decomposition of chemical warfare agents (CWAs) are in high demand for protecting military and civilian populations. Although many new materials, such as metal-organic frameworks (MOFs), have been proposed to use as CWA filtration media, their eventual transition requires a detailed understanding of the atomic-scale reaction mechanisms. Zr-based MOFs were recently shown to be among the fastest catalysts of nerve-agent hydrolysis reaction in solution. We show the results of a detailed study of the adsorption and decomposition of a nerve-agent simulant, dimethyl methylphosphonate (DMMP), on Zr-based MOFs, that have different pore sizes and connectivities, using synchrotron-based X-ray powder diffraction, X-ray absorption and infrared spectroscopy, which reveals key aspects of the reaction mechanism. Further, we evaluate how battle-field contaminants such as CO2 can influence effective detoxification of CWAs by Zr-based MOF-808.
Hosted by: Ignace Jarrige
14929 | INT/EXT | Events Calendar
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