Multispectroscopic (FTIR, XPS, and TOFMS−TPD) Investigation of the Core−Shell Bonding in Sonochemically Prepared Aluminum Nanoparticles Capped with Oleic Acid
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- 作者：William K. Lewis ; Andrew T. Rosenberger ; Joseph R. Gord ; Christopher A. Crouse ; Barbara A. Harruff ; K. A. Shiral Fernando ; Marcus J. Smith ; Donald K. Phelps ; Jonathon E. Spowart ; Elena A. Guliants ; Chr
- 刊名：Journal of Physical Chemistry C
- 出版年：2010
- 出版时间：April 15, 2010
- 年：2010
- 卷：114
- 期：14
- 页码：6377-6380
- 全文大小：123K
- 年卷期：v.114,no.14(April 15, 2010)
- ISSN：1932-7455
文摘
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.