Synthesis of Pt{sub 3}Sn alloy nanoparticles and their catalysis for electro-oxidation of CO and methanol.

Journal Article · Fri Nov 04 04:00:00 EDT 2011 · ACS Catalysis

DOI:https://doi.org/10.1021/cs200430r· OSTI ID:1035465

Liu, Y; Li, D; Stamenkovic, V R; Soled, S; Henao, J D; Sun, S ^[1]

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1. Materials Science Division

Monodisperse Pt{sub 3}Sn alloy nanoparticles (NPs) were synthesized by a controlled coreduction of Pt(II) acetylacetonate and Sn(II) acetylacetonate at 180-280 C in 1-octadecene. In the synthesis, oleylamine was used as a reducing agent, and oleylamine/oleic acid served as surfactants. The sizes of the Pt{sub 3}Sn NPs were tuned from 4 to 7 nm by controlling the metal salt injection temperatures from 180 to 240 C. These monodisperse Pt3Sn NPs were highly active for CO and methanol oxidation in 0.1 M HClO{sub 4} solutions, and their activity and stability could be further improved by a postsynthesis thermal treatment at 400 C in Ar + 5% H{sub 2} for 1 h. They are promising as a practical catalyst for CO and methanol oxidation reactions in polymer electrolyte membrane fuel cell conditions.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1035465
• Report Number(s): ANL/MSD/JA-72292
• Journal Information: ACS Catalysis, Journal Name: ACS Catalysis Journal Issue: 12 Vol. 1; ISSN 2155-5435
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

10 SYNTHETIC FUELS
30 DIRECT ENERGY CONVERSION
ALLOYS
CATALYSIS
CATALYSTS
ELECTROLYTES
FUEL CELLS
MEMBRANES
METHANOL
OXIDATION
POLYMERS
REDUCING AGENTS
STABILITY
SURFACTANTS
SYNTHESIS