386540 Electrospray Formed Metal Iodate-Based Energetic Composites and Their Application As Biocidal Agents

Tuesday, November 18, 2014
Galleria Exhibit Hall (Hilton Atlanta)
Wenbo Zhou, Chemical and Biomolecular Engineering, University of Maryland, College Park, College Park, MD, Haiyang Wang, Safety Engineering, University of Science and Technology, Nanjing, China, Guoqiang Jian, University of Maryland, Jeffery B Delisio, Chemistry and Biochemistry, University of Maryland, College Park, College Park, MD, Vincent T Lee, Cell Biology and Molecular Genetics, University of Maryland, College Park, College Park, MD and Michael R Zachariah, Departments of Chemical Engineering and Chemistry, University of Maryland, College Park, MD

Biological weapons, such as those employing anthrax, pose a considerable potential public threat. Bacterial spores, in particular, are highly stress resistant and cannot be completely killed by common bactericides such as iodophor. This paper reports metal-iodate-based thermites which could effectively kill spores through a thermal and chemical combined mechanism. In general, metal iodates act as a strong oxidizer to participate in formulating high reactive thermite mixtures, while containing high mass loadings of iodine (e.g. in the case of bismuth iodate >50 wt. % of iodine). This resultant thermite reaction generates both high-temperature and high-pressure with the added benefit of the release of iodine as a longer lived bactericide. This work shows that metal iodate and aluminum nanoparticles, when intimately assembled into micro-sized nanothermites by an electrospray process, show significantly improved reactivity and sporicidal performance over conventional metal oxide-based thermites.

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