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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.7b00098
|2 doi
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|a pubmed24n0897.xml
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|a DE-627
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|e rakwb
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|a eng
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|a Castegnaro, Marcus V
|e verfasserin
|4 aut
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|a Pd-M/C (M = Pd, Cu, Pt) Electrocatalysts for Oxygen Reduction Reaction in Alkaline Medium
|b Correlating the Electronic Structure with Activity
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|c 2017
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 11.05.2018
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|a Date Revised 11.05.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The increasing global needs for clean and renewable energy have fostered the design of new and highly efficient materials for fuel cells applications. In this work, Pd-M (M = Pd, Cu, Pt) and Pt nanoparticles were prepared by a green synthesis method. The carbon-supported nanoparticles were evaluated as electrocatalysts for the oxygen reduction reaction (ORR) in alkaline medium. A comprehensive electronic and structural characterization of these materials was achieved using X-ray diffraction, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, and X-ray absorption spectroscopy. Their electrochemical properties were investigated by cyclic voltammetry, while their activities for the ORR were characterized using steady-state polarization experiments. The results revealed that the bimetallic nanoparticles consist of highly crystalline nanoalloys with size around 5 nm, in which the charge transfer involving Pd and M atoms affects the activity of the electrocatalysts. Additionally, the samples with higher ORR activity are those whose d-band center is closer to the Fermi level
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Paschoalino, Waldemir J
|e verfasserin
|4 aut
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| 700 |
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|a Fernandes, Mauro R
|e verfasserin
|4 aut
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|a Balke, Benjamin
|e verfasserin
|4 aut
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|a M Alves, Maria C
|e verfasserin
|4 aut
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|a Ticianelli, Edson A
|e verfasserin
|4 aut
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|a Morais, Jonder
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 33(2017), 11 vom: 21. März, Seite 2734-2743
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:33
|g year:2017
|g number:11
|g day:21
|g month:03
|g pages:2734-2743
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|u http://dx.doi.org/10.1021/acs.langmuir.7b00098
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