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나노입자 연구단
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Synthesis of Pt and bimetallic PtPd nanostructures on Au nanoparticles for use as methanol tolerant oxygen reduction reaction catalysts

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Title
Synthesis of Pt and bimetallic PtPd nanostructures on Au nanoparticles for use as methanol tolerant oxygen reduction reaction catalysts
Author(s)
Park I.-S.; Kim O.-H.; Kim J.W.; Baeck Choi; Cho Y.-H.; Yung-Eun Sung
Publication Date
2015-05
Journal
NEW JOURNAL OF CHEMISTRY, v.39, no.8, pp.6034 - 6039
Publisher
ROYAL SOC CHEMISTRY
Abstract
Core-shell structured Au-PtPd/C and Au-Pt/C nanoparticles (NPs) were prepared using a successive reduction process on carbon supported Au with PtPd and Pt particles. Structural analyses of the core-shell NPs revealed uniformly distributed fine particles (<5 nm in diameter) on carbon particles and selectively deposited Pt and bimetallic PtPd structures on the Au surface. The activity of the NPs was investigated for the oxygen reduction reaction (ORR) in both H2SO4 solutions with and without CH3OH. In Au-Pt and Au-PtPd NPs, the activities for the ORR decreased in the solution without CH3OH as the amount of Pd increased; moreover, Au-PtPd NPs showed higher activity than Au-Pt NPs in solution with CH3OH due to its enhanced tolerance for methanol oxidation. Thus, the high methanol oxidation reaction tolerance of Au-PtPd NPs is ascribed to the synergistic effect resulting from its thin structure and bimetallic PtPd composition. © 2015 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique
URI
https://pr.ibs.re.kr/handle/8788114/2354
ISSN
1144-0546
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Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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