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Highly dispersed Pt nanoparticles on nitrogen-doped magnetic carbon nanoparticles and their enhanced activity for methanol oxidation

Cited 94 time in Web of Science Cited 90 time in Scopus
Authors
Choi, Baeck; Yoon, Hyeonseok; Park, In-Su; Jang, Jyongsik; Sung, Yung-Eun
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
URI
https://hdl.handle.net/10371/61352
DOI
https://doi.org/10.1016/j.carbon.2007.08.028
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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