Electrochemical determination of the surface composition of Pd-Pt core-shell nanoparticles

Authors
Jeon, Tae-YeolYoo, Sung JongCho, Yong-HunPark, Hee-YoungSung, Yung-Eun
Issue Date
2013-03
Publisher
ELSEVIER SCIENCE INC
Citation
ELECTROCHEMISTRY COMMUNICATIONS, v.28, pp.114 - 117
Abstract
Different amounts of Pt atoms were deposited onto the surface of Pd nanoparticles supported on carbon black by hydroquinone reduction method in anhydrous ethanol. Here, we surveyed electrochemical probing of surface compositions of Pd-Pt surface alloys. They were calculated from hydrogen desorption, carbon monoxide adlayer oxidation, and reduced carbon dioxide oxidation charges. The surface composition of Pt drastically increased up to Pt[0.3]/Pd/C (23.1 at.% of Pt) and then approached that of pure Pt with the moderate rate of increase. (C) 2012 Elsevier B.V. All rights reserved.
Keywords
OXYGEN-REDUCTION; ENHANCED ACTIVITY; ALLOYS; ELECTROCATALYSTS; ELECTROSORPTION; DEPOSITION; ADSORPTION; CATALYSTS; CLUSTERS; SMOOTH; OXYGEN-REDUCTION; ENHANCED ACTIVITY; ALLOYS; ELECTROCATALYSTS; ELECTROSORPTION; DEPOSITION; ADSORPTION; CATALYSTS; CLUSTERS; SMOOTH; Carbon dioxide; Core-shell; Oxygen reduction reaction; Electrocatalyst; Fuel cell
ISSN
1388-2481
URI
https://pubs.kist.re.kr/handle/201004/128304
DOI
10.1016/j.elecom.2012.12.022
Appears in Collections:
KIST Article > 2013
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