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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1021/la303809m
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|a eng
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1 |
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|a Zhao, Liyan
|e verfasserin
|4 aut
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|a Formation of Au-Pt alloy nanoparticles on a Si substrate by simple dip-coating at room temperature
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|c 2013
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|a Text
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|a Date Completed 27.06.2013
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|a Date Revised 21.11.2013
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Spherical Au-Pt alloy nanoparticles of 10 nm average size have been prepared on a H-terminated Si(100) substrate by an extremely simple method of dip-coating. X-ray photoelectron spectroscopy and glancing-incidence X-ray diffraction confirm the formation of Au-Pt alloy. The Au(3+) ions are first reduced on the Si substrate upon dipping, and the freshly formed Au nuclei then work as a "catalyst" by promoting the reduction of PtCl(6)(2-) ions on the Au nuclei. The subsequent interdiffusion of Au and Pt atoms leads to the observed alloy formation. The present method provides an environment-friendly, low-cost route to preparing anode electrodes in fuel cells
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|t Langmuir : the ACS journal of surfaces and colloids
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