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Volume 138, 2008
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Highly size-controlled synthesis of Au/Pd nanoparticles by inert-gas condensation

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Gold/Palladium nanoparticles were fabricated by inert-gas condensation on a sputtering reactor. With this method, by controlling both the atmosphere on the condensation chamber and the magnetron power, it was possible to produce nanoparticles with a high degree of monodispersity in size. The structure and size of the Au/Pd nanoparticles were determined by mass spectroscopy, and confirmed by atomic force microscopy and electron transmission microscopy measurements. The chemical composition was analyzed by X-ray microanalysis. From these measurements we confirmed that with the sputtering technique we are able to produce particles of 1, 3, and 5 nm on size, depending on the choice of the synthesis conditions. From TEM measurements made both in the regular HREM, as well as in STEM-HAADF mode, we found that the particles are icosahedral in shape, and the micrographs show no evidence of a core-shell structure, in contrast to what is observed in the case of nanoparticles prepared by chemical synthesis.

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Publication details

The article was received on 18 Apr 2007, accepted on 11 May 2007 and first published on 15 Oct 2007

Article type: Paper
DOI: 10.1039/B705913M
Citation: Faraday Discuss., 2008,138, 353-362
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    Highly size-controlled synthesis of Au/Pd nanoparticles by inert-gas condensation

    E. Pérez-Tijerina, M. Gracia Pinilla, S. Mejía-Rosales, U. Ortiz-Méndez, A. Torres and M. José-Yacamán, Faraday Discuss., 2008, 138, 353
    DOI: 10.1039/B705913M

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