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Title: A phase transfer identification of core-shell structures in Au-Ru nanoparticles
Authors: Yang, J. 
Lee, J.Y. 
Too, H.-P.
Keywords: Core-shell
Gold nanoparticle
Phase transfer
Ruthenium nanoparticle
Seed-mediated growth
Issue Date: 29-Apr-2005
Citation: Yang, J., Lee, J.Y., Too, H.-P. (2005-04-29). A phase transfer identification of core-shell structures in Au-Ru nanoparticles. Analytica Chimica Acta 537 (1-2) : 279-284. ScholarBank@NUS Repository.
Abstract: The difference between the transfer of citrate-stabilized Au and Ru nanoparticles from the aqueous phase to toluene was used to develop a simple experimental procedure that can positively identify the formation of bimetallic Au-Ru nanoparticles with the core-shell structure formed in the seed-mediated growth process. The procedure was independently verified by UV-vis spectroscopy, transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDX) and X-ray photoelectron spectroscopy (XPS). The experimental results clearly showed that core-shell nanoparticles of Au-Ru were formed by the seed mediated growth method using Au nanoparticle seeds. The reverse order of using Ru nanoparticles as the seeds, on the contrary, could only produce a physical mixture of isolated nanoparticles of Ru and Au under the same experimental conditions. © 2005 Elsevier B.V. All rights reserved.
Source Title: Analytica Chimica Acta
ISSN: 00032670
DOI: 10.1016/j.aca.2004.12.089
Appears in Collections:Staff Publications

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