Composition-controlled synthesis of bimetallic PdPt nanoparticles and their electro-oxidation of methanol

Yi Liu; Miaofang Chi; Vismadeb Mazumder; Karren L. More; Stuart Soled; Juan D. Henao; Shouheng Sun

doi:10.1021/cm2014785

Composition-controlled synthesis of bimetallic PdPt nanoparticles and their electro-oxidation of methanol

Yi Liu, Miaofang Chi, Vismadeb Mazumder, Karren L. More, Stuart Soled, Juan D. Henao, Shouheng Sun

Research output: Contribution to journal › Article › peer-review

225 Scopus citations

Abstract

PdPt alloy nanoparticles (NPs) are promising catalysts for various chemical reactions because of the presence of powerful catalytic components of Pt and Pd on the surface of one nanostructure. In this paper, we report a facile synthesis of polyhedral PdPt alloy NPs via coreduction of Pd(acac)₂ (acac = acetylacetonate) and Pt(acac)₂ with morpholine borane in oleylamine at 90 and 180 °C. In the synthesis, the molar ratio of the two metal precursors added in the reaction mixture was carried over to the final PdPt NP product, and compositions of the PdPt NPs were readily tuned from Pd₈₈Pt₁₂ to Pd₃₄Pt₆₆. These PdPt NPs show the composition-dependent catalytic activity for methanol oxidation, with NPs in 40-60 atomic % Pt exhibiting the superior activity and durability.

Original language	English
Pages (from-to)	4199-4203
Number of pages	5
Journal	Chemistry of Materials
Volume	23
Issue number	18
DOIs	https://doi.org/10.1021/cm2014785
State	Published - Sep 27 2011

Keywords

Palladium platinum alloy
bimetallic nanoparticles
methanol oxidation

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title = "Composition-controlled synthesis of bimetallic PdPt nanoparticles and their electro-oxidation of methanol",

abstract = "PdPt alloy nanoparticles (NPs) are promising catalysts for various chemical reactions because of the presence of powerful catalytic components of Pt and Pd on the surface of one nanostructure. In this paper, we report a facile synthesis of polyhedral PdPt alloy NPs via coreduction of Pd(acac)2 (acac = acetylacetonate) and Pt(acac)2 with morpholine borane in oleylamine at 90 and 180 °C. In the synthesis, the molar ratio of the two metal precursors added in the reaction mixture was carried over to the final PdPt NP product, and compositions of the PdPt NPs were readily tuned from Pd88Pt12 to Pd34Pt66. These PdPt NPs show the composition-dependent catalytic activity for methanol oxidation, with NPs in 40-60 atomic % Pt exhibiting the superior activity and durability.",

keywords = "Palladium platinum alloy, bimetallic nanoparticles, methanol oxidation",

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T1 - Composition-controlled synthesis of bimetallic PdPt nanoparticles and their electro-oxidation of methanol

AU - Liu, Yi

AU - Chi, Miaofang

AU - Mazumder, Vismadeb

AU - More, Karren L.

AU - Soled, Stuart

AU - Henao, Juan D.

AU - Sun, Shouheng

PY - 2011/9/27

Y1 - 2011/9/27

N2 - PdPt alloy nanoparticles (NPs) are promising catalysts for various chemical reactions because of the presence of powerful catalytic components of Pt and Pd on the surface of one nanostructure. In this paper, we report a facile synthesis of polyhedral PdPt alloy NPs via coreduction of Pd(acac)2 (acac = acetylacetonate) and Pt(acac)2 with morpholine borane in oleylamine at 90 and 180 °C. In the synthesis, the molar ratio of the two metal precursors added in the reaction mixture was carried over to the final PdPt NP product, and compositions of the PdPt NPs were readily tuned from Pd88Pt12 to Pd34Pt66. These PdPt NPs show the composition-dependent catalytic activity for methanol oxidation, with NPs in 40-60 atomic % Pt exhibiting the superior activity and durability.

AB - PdPt alloy nanoparticles (NPs) are promising catalysts for various chemical reactions because of the presence of powerful catalytic components of Pt and Pd on the surface of one nanostructure. In this paper, we report a facile synthesis of polyhedral PdPt alloy NPs via coreduction of Pd(acac)2 (acac = acetylacetonate) and Pt(acac)2 with morpholine borane in oleylamine at 90 and 180 °C. In the synthesis, the molar ratio of the two metal precursors added in the reaction mixture was carried over to the final PdPt NP product, and compositions of the PdPt NPs were readily tuned from Pd88Pt12 to Pd34Pt66. These PdPt NPs show the composition-dependent catalytic activity for methanol oxidation, with NPs in 40-60 atomic % Pt exhibiting the superior activity and durability.

KW - Palladium platinum alloy

KW - bimetallic nanoparticles

KW - methanol oxidation

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U2 - 10.1021/cm2014785

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JO - Chemistry of Materials

JF - Chemistry of Materials

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ER -

Composition-controlled synthesis of bimetallic PdPt nanoparticles and their electro-oxidation of methanol

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Keywords

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