Sonochemically Assisted Thermal Decomposition of Alane N,N-Dimethylethylamine with Titanium (IV) Isopropoxide in the Presence of Oleic Acid to Yield Air-Stable and Size-Selective Aluminum Core−Shell Nanoparticles
Journal of Physical Chemistry C
Using sonochemistry to provide the thermal energy and mixing, we demonstrate the ability to synthesize air-stable aluminum nanoparticles of two different size distributions from the titanium-catalyzed thermal decomposition of alane. Characterization data indicate the presence of spherical face-centered-cubic aluminum nanoparticles with average sizes of either 5 or 30 nm that are capped with an organic shell. The average size of the nanoparticles correlates with the concentration of the passivation agent oleic acid, where a higher concentration results in smaller particles. Thermal analysis data demonstrates that at elevated temperatures (>550 °C), these particles react via a typical aluminum oxidation mechanism, whereas at low temperatures (<550 °C), the behavior of these particles is unique and directly related to the presence of the organic shell.
Copyright © 2009, American Chemical Society
American Chemical Society
Fernando, K. A. Shiral; Smith, Marcus J.; Harruff-Miller, Barbara A.; Lewis, William K.; Guliants, Elena A.; and Bunker, Christopher E., "Sonochemically Assisted Thermal Decomposition of Alane N,N-Dimethylethylamine with Titanium (IV) Isopropoxide in the Presence of Oleic Acid to Yield Air-Stable and Size-Selective Aluminum Core−Shell Nanoparticles" (2009). Electrical and Computer Engineering Faculty Publications. 136.