AUTHORS: Wang CL, Hsao BJ, Lai SF, Chen WC, Chen HH, Chen YY, Chien CC, Cai X, Kempson IM, Hwu Y, Margaritondo G

Nanotechnology, 22(6): 065605, February 2011

ABSTRACT

We synthesized AuPt alloyed nanoparticles in colloidal solution by a one-pot procedure based on synchrotron x-ray irradiation in the presence of PEG (polyethylene glycol). The exclusive presence of alloyed nanoparticles with fcc structure was confirmed by several different experiments including UV-vis spectroscopy, x-ray diffraction (XRD) and transmission electron microscopy (TEM). The composition of the AuPt alloyed nanoparticles can be varied in a continuous fashion by simply varying the feed ratios of Au and Pt precursors. The nanoparticles exhibited colloidal stability and biocompatibility, important for potential applications.

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