Composition-Controlled Synthesis of Bimetallic PdPt Nanoparticles and Their Electro-oxidation of Methanol

Composition-Controlled Synthesis of Bimetallic PdPt Nanoparticles and Their Electro-oxidation of Methanol

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...

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Veröffentlicht in:Chemistry of materials 2011-09, Vol.23 (18), p.4199-4203
Hauptverfasser: Liu, Yi, Chi, Miaofang, Mazumder, Vismadeb, More, Karren L, Soled, Stuart, Henao, Juan D, Sun, Shouheng
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container_end_page 4203
container_issue 18
container_start_page 4199
container_title Chemistry of materials
container_volume 23
creator Liu, Yi
Chi, Miaofang
Mazumder, Vismadeb
More, Karren L
Soled, Stuart
Henao, Juan D
Sun, Shouheng
description 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.
doi_str_mv 10.1021/cm2014785
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