One-pot synthesis of a highly active, non-spherical PdPt@Pt core-shell nanospike electrocatalyst exhibiting a thin Pt shell with multiple grain boundaries

Jisun Yoon, Sungwon Kang, Hionsuck Baik, Yong Soo Choi, Seong Jung Kwon, Kwangyeol Lee

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Co-decomposition of Pd and Pt precursors in the presence of trioctylphosphine and stearic acid gives a unique non-spherical PdPt@Pt core-shell nanospike with multiple grain boundaries in a facile one-pot synthesis. The difference in the metal-P bond strengths causes the disparate precursor decomposition kinetics, which in turn positions the Pt content on the nanoparticle surface. The core-shell composition, crystallinity, and shell thickness are conveniently controlled by simple variations in the amount of precursors and surfactants. The PdPt@Pt core-shell nanospike shows a high electrocatalytic activity toward methanol oxidation reaction. The excellent catalytic performance seems to originate from (1) the existence of multiple, surface energy-elevating grain boundaries, (2) roughened surface, and (3) lattice mismatch between the core and shell.

Original languageEnglish
Pages (from-to)46521-46526
Number of pages6
JournalRSC Advances
Volume4
Issue number87
DOIs
Publication statusPublished - 2014 Jan 1

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Electrocatalysts
Grain boundaries
Decomposition
Lattice mismatch
Stearic acid
Interfacial energy
Surface-Active Agents
Methanol
Surface active agents
Metals
Nanoparticles
Oxidation
Kinetics
Chemical analysis
stearic acid

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

One-pot synthesis of a highly active, non-spherical PdPt@Pt core-shell nanospike electrocatalyst exhibiting a thin Pt shell with multiple grain boundaries. / Yoon, Jisun; Kang, Sungwon; Baik, Hionsuck; Choi, Yong Soo; Kwon, Seong Jung; Lee, Kwangyeol.

In: RSC Advances, Vol. 4, No. 87, 01.01.2014, p. 46521-46526.

Research output: Contribution to journalArticle

Yoon, Jisun ; Kang, Sungwon ; Baik, Hionsuck ; Choi, Yong Soo ; Kwon, Seong Jung ; Lee, Kwangyeol. / One-pot synthesis of a highly active, non-spherical PdPt@Pt core-shell nanospike electrocatalyst exhibiting a thin Pt shell with multiple grain boundaries. In: RSC Advances. 2014 ; Vol. 4, No. 87. pp. 46521-46526.
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