Dispersion of Pt-Ru alloys onto various carbons using gamma-irradiation

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(PVP)-protected Pt-Ru alloy nanoparticles were prepared using gamma-irradiation at room temperature. Pt-Ru alloy particles were successfully dispersed onto various carbon structures, including Vulcan XC-71, Ketjen-300, Ketjen-600, single-walled carbon nanotubes (SWCNTs), and multi-walled carbon nanotubes (MWCNTs) to form new types of Pt-Ru/carbon-based composites. While Pt-Ru alloy nanoparticles were mainly aggregated on Vulcan XC-71, Ketjen-300 and Ketjen-600, SWCNTs and MWCNTs provided hydrophilic sites for improving the distribution of alloy particles. FT-IR spectroscopy provided evidence for the formation of carboxylate and hydroxyl groups on the surface of the nanotubes after gamma-irradiation. These functional groups serve as the nuclei that resulted in the improved dispersion of alloy nanoparticles onto SWCNTs and MWCNTs. (c) 2005 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2006-04
Language
English
Article Type
Article
Keywords

ELECTROCHEMICAL OXIDATION; METHANOL; NANOPARTICLES; NANOTUBES; CATALYSTS; SURFACE; SIZE; PARTICLES; PLATINUM; SILVER

Citation

JOURNAL OF NON-CRYSTALLINE SOLIDS, v.352, no.4, pp.355 - 360

ISSN
0022-3093
DOI
10.1016/j.jnoncrysol.2005.12.006
URI
http://hdl.handle.net/10203/12128
Appears in Collection
CH-Journal Papers(저널논문)
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