Synthesis and Characterization of PtSn/Carbon and Pt 3 Sn/Carbon Nanocomposites as Methanol Electrooxidation Catalysts

Frank E. Jones*, Stephen B. Milne, Bogdan Gurau, Eugene S. Smotkin, Stuart R. Stock, C. M. Lukehart

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Two Pt-Sn/vulcan carbon nanocomposites containing nanoclusters of PtSn (niggliite) and Pt 3 Sn highly dispersed on a carbon powder support have been prepared using Pt(SnPh 2 Cl)(PPh 3 ) 2 (Ph) or {Pt 3 [μ-(PPh 2 ) 2 CH 2 ] 23 SnF 3 ) (μ 3 -CO)}[PF 6 ] as single-source precursors of metal alloy. PtP 2 or Pt metal is also present as a secondary phase. Bimetallic Pt-Sn nanoclusters with an average diameter of 5-8 nm are formed at a total metal loading of ca. 15 wt %. Evaluation of both Pt-Sn/C nanocomposites as electrooxidation catalysts in a direct methanol fuel cell gives fuel cell performances comparable to that expected for Pt-Sn catalysts prepared by more conventional methods.

Original languageEnglish (US)
Pages (from-to)81-87
Number of pages7
JournalJournal of Nanoscience and Nanotechnology
Volume2
Issue number1
DOIs
StatePublished - Dec 1 2002

Keywords

  • Bimetallic Nanoparticles
  • Methanol Oxidation
  • Pt-Sn/carbon Nanocomposites

ASJC Scopus subject areas

  • Medicine(all)

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