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&
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- 作者：K. A. Shiral Fernando ; Marcus J. Smith ; Barbara A. Harruff ; William K. Lewis ; Elena A. Guliants ; Christopher E. Bunker
- 刊名：Journal of Physical Chemistry C
- 出版年：2009
- 出版时间：January 15, 2009
- 年：2009
- 卷：113
- 期：2
- 页码：500-503
- 全文大小：163K
- 年卷期：v.113,no.2(January 15, 2009)
- ISSN：1932-7455
文摘
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.