Composition-Controlled Synthesis of Bimetallic PdPt Nanoparticles and Their Electrocatalysis for Methanol Oxidation Reaction

Journal Article · Sat Jan 01 00:00:00 EST 2011 · Chemistry of Materials

DOI:https://doi.org/10.1021/cm2014785· OSTI ID:1049789

Liu, Yi ^[1]; Chi, Miaofang ^[2]; Mazumder, Vismadeb ^[1]; More, Karren Leslie ^[2]; Sun, Shouheng ^[1]

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1. Brown University
2. ORNL

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){sub 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 Pd{sub 88}Pt{sub 12} to Pd{sub 34}Pt{sub 66}. 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.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Shared Research Equipment Collaborative Research Center
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1049789
• Journal Information: Chemistry of Materials, Vol. 23, Issue 18; ISSN 0897-4756
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
36 MATERIALS SCIENCE
ALLOYS
BORANES
CATALYSTS
CHEMICAL REACTIONS
METHANOL
MIXTURES
MORPHOLINES
OXIDATION
PALLADIUM
PLATINUM ALLOYS
SYNTHESIS