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

doi:10.1002/cnma.201800150

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 journal › Article (Academic Journal) › peer-review

10 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 language	English
Pages (from-to)	909-913
Number of pages	5
Journal	ChemNanoMat
Volume	4
Issue number	9
Early online date	28 May 2018
DOIs	https://doi.org/10.1002/cnma.201800150
Publication status	Published - Sept 2018

Keywords

concave octahedral
electrocatalysis
microwave synthesis
nanocrystals
platinum copper alloy

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

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.",

keywords = "concave octahedral, electrocatalysis, microwave synthesis, nanocrystals, platinum copper alloy",

author = "Jing Yang and Manman Su and Yanxi Zhao and Jinlin Li and Mei Li and Tao Huang",

year = "2018",

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doi = "10.1002/cnma.201800150",

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T1 - Facile Microwave-Assisted Synthesis of Concave Octahedral Pt−Cu Alloy Nanocrystals and their Electrocatalytic Properties

AU - Yang, Jing

AU - Su, Manman

AU - Zhao, Yanxi

AU - Li, Jinlin

AU - Li, Mei

AU - Huang, Tao

PY - 2018/9

Y1 - 2018/9

N2 - 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.

AB - 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.

KW - concave octahedral

KW - electrocatalysis

KW - microwave synthesis

KW - nanocrystals

KW - platinum copper alloy

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U2 - 10.1002/cnma.201800150

DO - 10.1002/cnma.201800150

M3 - Article (Academic Journal)

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SN - 2199-692X

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JF - ChemNanoMat

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ER -

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

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Keywords

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