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Highly dispersed Pt nanoparticles on nitrogen-doped magnetic carbon nanoparticles and their enhanced activity for methanol oxidation
Cited 96 time in
Web of Science
Cited 93 time in Scopus
- Authors
- Issue Date
- 2007
- Publisher
- Elsevier
- Citation
- Carbon 2007;45:2496–2501
- Abstract
- Pt nanoparticles dispersed nitrogen-doped magnetic carbon nanoparticles (N-MCNPs) were prepared by chemical method, conventional
sodium borohydride reduction. Then, those probable applications were evaluated for a support material comparing with Vulcan
XC-72 for polymer electrolyte membrane fuel cell. N-MCNPs-supported Pt nanoparticles show a better activity of methanol oxidation
reaction compared to Vulcan XC-72-supported one in terms of both mass and electrochemical surface area (ESA) normalized current
density. In particular, Pt/N-MCNPs show more enhanced activity based on the mass normalized specific activity rather than ESA normalized
activity. For investigation of physical characterizations of Pt/N-MCNPs, and Pt/Vulcan XC-72, X-ray diffraction (XRD), high
resolution-transmission electron microscopy (HR-TEM), and X-ray photoelectron spectroscopy (XPS) likes various experiments were
performed. Especially, to identify the role of nitrogen in the N-MCNPs for Pt nanoparticles dispersion, specific investigation of N 1s
XP spectra with peak deconvolution were performed on N-MCNPs support material of the before and after chemical reduction of Pt
nanoparticles.
- ISSN
- 0008-6223
- Language
- English
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