Ag鈥揅u Bimetallic Nanoparticles with Enhanced Resistance to Oxidation: A Combined Experimental and Theoretical Study
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- 作者：Na Rae Kim ; Kihyun Shin ; Inyu Jung ; Moonsub Shim ; Hyuck Mo Lee
- 刊名：Journal of Physical Chemistry C
- 出版年：2014
- 出版时间：November 13, 2014
- 年：2014
- 卷：118
- 期：45
- 页码：26324-26331
- 全文大小：479K
- ISSN：1932-7455
文摘
A simple oleylamine-based thermal decomposition process using different time steps for precursor injection was used to obtain bimetallic Ag鈥揅u nanoparticles with a narrow size distribution. Experimental and theoretical studies were carried out to demonstrate that these bimetallic nanoparticles are less prone to oxidation. The calculated energy trends for O2 adsorption on the nanoparticles show that the adsorption energy declines rapidly when more than six O2 molecules are present, indicating that O2 is rarely adsorbed on Ag鈥揅u nanoparticles. Electron transfer from Cu to Ag within these bimetallic nanoparticles allows far better resistance to oxidation than monometallic Cu nanoparticles.