Please use this identifier to cite or link to this item: https://doi.org/10.1021/la035204i
Title: Physical and Electrochemical Characterizations of Microwave-Assisted Polyol Preparation of Carbon-Supported PtRu Nanoparticles
Authors: Liu, Z.
Lee, J.Y. 
Chen, W. 
Han, M.
Gan, L.M.
Issue Date: 6-Jan-2004
Source: Liu, Z.,Lee, J.Y.,Chen, W.,Han, M.,Gan, L.M. (2004-01-06). Physical and Electrochemical Characterizations of Microwave-Assisted Polyol Preparation of Carbon-Supported PtRu Nanoparticles. Langmuir 20 (1) : 181-187. ScholarBank@NUS Repository. https://doi.org/10.1021/la035204i
Abstract: PtRu nanoparticles supported on Vulcan XC-72 carbon and carbon nanotubes were prepared by a microwave-assisted polyol process. The catalysts were characterized by transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy (XPS). The PtRu nanoparticles, which were uniformly dispersed on carbon, were 2-6 nm in diameter. All PtRu/C catalysts prepared as such displayed the characteristic diffraction peaks of a Pt face-centered cubic structure, excepting that the 2θ values were shifted to slightly higher values. XPS analysis revealed that the catalysts contained mostly Pt(0) and Ru(0), with traces of Pt(II), Pt(IV), and Ru(IV). The electro-oxidation of methanol was studied by cyclic voltammetry, linear sweep voltammetry, and chronoamperometry. It was found that both PtRu/C catalysts had high and more durable electrocatalytic activities for methanol oxidation than a comparative Pt/C catalyst. Preliminary data from a direct methanol fuel cell single stack test cell using the Vulcan-carbon-supported PtRu alloy as the anode catalyst showed high power density.
Source Title: Langmuir
URI: http://scholarbank.nus.edu.sg/handle/10635/51804
ISSN: 07437463
DOI: 10.1021/la035204i
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