Multispectroscopic (FTIR, XPS, and TOFMS−TPD) Investigation of the Core−Shell Bonding in Sonochemically Prepared Aluminum Nanoparticles Capped with Oleic Acid
The Journal of Physical Chemistry C2010Vol. 114(14), pp. 6377–6380
Citations Over TimeTop 18% of 2010 papers
William K. Lewis, Andrew Rosenberger, Joseph R. Gord, Christopher A. Crouse, Barbara A. Harruff, K. A. Shiral Fernando, Marcus J. Smith, Donald K. Phelps, J. E. Spowart, Elena A. Guliants, Christopher E. Bunker
Abstract
Organically capped metal nanoparticles are an attractive alternative to more conventional oxide-passivated materials, due to the lower reaction temperatures and the possibility of tuning the organic coating. Sonochemical methods have been used to produce small (∼5 nm average size) air-stable aluminum nanoparticles capped with oleic acid. In order to understand the nature of the metal−organic bonding in the nanoparticles, we have used FTIR, XPS, and TOFMS−TPD techniques to study the organic passivation layer and its desorption at elevated temperatures. In the present case we find that the organic layer appears to be attached via Al−O−C bonds with the C atom formerly involved in the carboxylic acid functional group.
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