Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 10, Issue 7, Pages 4266-4272Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2010.2395
Keywords
PtRe; Alloy Nanoparticles; Methanol Oxidation
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Funding
- U.S. Department of Energy [DE-FG02-01ER45867]
- NSF Materials Research Science and Engineering Center [DMR 02-13985]
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We report a new synthesis of PtRe alloy nanoparticles (NPs) and their electrocatalytic activity for methanol oxidation. PtRe alloy NPs with controlled composition were prepared by a capping agents-based colloidal method. In the synthesis, trioctylamine was used as high-boiling solvent, and oleylamine/oleic acid were employed as capping agents to control the particle size and dispersion. The PtRe NPs were fully characterized by TEM, EDX, XRD and XPS. The as-prepared PtRe NPs had a narrow size distribution, and displayed a good dispersion in hydrocarbon solvents. Carbon-supported PtRe catalysts were prepared by physical deposition of as-prepared particles on carbon powder, followed by the catalytic activation at 400 degrees C in Ar/H-2. Electrochemical studies showed the PtRe catalysts had high activity for methanol electrooxidation.
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