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Tailoring the Electronic Structure of Nanoelectrocatalysts Induced by a Surface-Capping Organic Molecule for the Oxygen Reduction Reaction

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Title
Tailoring the Electronic Structure of Nanoelectrocatalysts Induced by a Surface-Capping Organic Molecule for the Oxygen Reduction Reaction
Author(s)
Young-Hoon Chung; Dong Young Chung; Namgee Jung; Yung Eun Sung
Publication Date
2013-04
Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, v.4, no.8, pp.1304 - 1309
Publisher
AMER CHEMICAL SOC
Abstract
Capping organic molecules, including oleylamine, strongly adsorbed onto Pt nanoparticles during preparation steps are considered undesirable species for the oxygen reduction reaction due to decreasing electrochemical active sites. However, we found that a small amount of oleylamine modified platinum nanoparticles showed significant enhancement of the electrochemical activity of the oxygen reduction reaction, even with the loss of the electrochemically active surface area. The enhancement was correlated with the downshift of the frontier d-band structure of platinum and the retardation of competitively adsorbed species. These results suggest that a capping organic molecule modified electrode can be a strategy to design an advanced electrocatalyst by modification of electronic structures.
URI
https://pr.ibs.re.kr/handle/8788114/1352
ISSN
1948-7185
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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