Aluminum nanoparticles (Al NPs) have numerous potential applications in fuels, energetics, and energy storage. This study examines initiator effects on the bottom-up synthesis of aluminum nanoparticles using alane N,N-dimethylamine as the precursor monomer. The Al NP formation reaction was initiated using titanium isopropoxide (TTIP), following previously reported methods. The incipient Al NP cores were capped by polymers that were produced by oligomerization of epoxide monomers. Al NP core sizes were determined using powder X-ray diffraction. At lower initiator concentrations, the product Al NP core diameters are larger. Al NP core diameter decreases as initiator concentration increases. This is consistent with rapid formation of larger numbers of nuclei at higher initiator concentrations, thus depleting the alane precursor concentrations resulting in smaller Al NP cores in the final product. Electron microscopy and molecular spectroscopic analyses were performed on the final organometallic composite.

Initiator effects on aluminum nanoparticle growth

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.