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231223s2010 xx |||||o 00| ||eng c |
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7 |
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|a 10.1021/la101060s
|2 doi
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|a pubmed25n0661.xml
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|a (DE-627)NLM198245483
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|a (NLM)20486650
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Sun, Zhenyu
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Pt-Ru/CeO2/carbon nanotube nanocomposites
|b an efficient electrocatalyst for direct methanol fuel cells
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|c 2010
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 01.12.2010
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|a Date Revised 29.07.2010
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Pt-Ru/CeO(2)/multiwalled carbon nanotube (MWNT) electrocatalysts were prepared using a rapid sonication-facilitated deposition method and were characterized by X-ray diffraction (XRD), X-ray photoemission spectroscopy (XPS), transmission electron microscopy (TEM), energy-dispersive spectroscopy (EDS), and voltammetry. Morphological characterization by TEM revealed that CeO(2) nanoparticles (NPs) were in intimate contact with Pt-Ru NPs, and both were highly dispersed on the exteriors of nanotubes with a small size and a very narrow size distribution. Compared with the Pt-Ru/MWNT and Pt/MWNT electrocatalysts, the as-prepared Pt-Ru/CeO(2)/MWNT exhibited a significantly improved electrochemically active surface area (ECSA) and a remarkably enhanced activity toward methanol oxidation. The effects of the Pt-Ru loading and the Pt-to-Ru molar ratio on the electrocatalytic activity of Pt-Ru/CeO(2)/MWNT for methanol oxidation were investigated. We found that a maximum activity toward methanol oxidation reached at the 10 wt % of Pt-Ru loading and 1:1 of Pt-to-Ru ratio. Moreover, the role of CeO(2) in the catalysts for the enhancement of methanol oxidation was discussed in terms of both bifunctional mechanism and electronic effects
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|a Journal Article
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1 |
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|a Wang, Xiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Zhimin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Hongye
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yu, Ping
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mao, Lanqun
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g 26(2010), 14 vom: 20. Juli, Seite 12383-9
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnas
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| 773 |
1 |
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|g volume:26
|g year:2010
|g number:14
|g day:20
|g month:07
|g pages:12383-9
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| 856 |
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|u http://dx.doi.org/10.1021/la101060s
|3 Volltext
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