Facile Microwave-Assisted Synthesis of Concave Octahedral Pt−Cu Alloy Nanocrystals and their Electrocatalytic Properties

Jing Yang, Manman Su, Yanxi Zhao, Jinlin Li, Mei Li, Tao Huang*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

2 Citations (Scopus)

Abstract

Well-defined concave octahedral Pt−Cu alloy nanocrystals were rapidly synthesized by reducing Pt(IV) and Cu(II) precursors simultaneously in a one-step process under microwave irradiation for 110 s in the presence of PVP and an appropriate amount of KI. The optimum molar ratio of H2PtCl6/CuCl2/KI/PVP was 1/3/30/45 with a total concentration of the Pt(IV) and Cu(II) precursors of 4 mM in the reaction system. Tetraethylene glycol (TEG) was used as both a solvent and a reducing agent and the use of KI was critical to the formation of Pt−Cu alloy concave octahedral nanocrystals. In addition, microwave irradiation is advantageous to the generation of nano-alloy by promoting the simultaneous reduction of mixed metallic species. The as-prepared concave octahedral Pt−Cu alloy nanocrystals improved significantly electrocatalytic activity relative to the commercial Pt black.

Original languageEnglish
Pages (from-to)909-913
Number of pages5
JournalChemNanoMat
Volume4
Issue number9
Early online date28 May 2018
DOIs
Publication statusPublished - Sep 2018

Keywords

  • concave octahedral
  • electrocatalysis
  • microwave synthesis
  • nanocrystals
  • platinum copper alloy

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