Controlled synthesis of Pt-Sn/C fuel cell catalysts with exclusive Sn-Pt interaction. Application in CO and ethanol electrooxidation reactions

Sergio García-Rodríguez, Ferenc Somodi, Irina Borbáth, József L. Margitfalvi, Miguel Antonio Peña, Jose Luis G. Fierro, Sergio Rojas

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

A series of Sn modified carbon supported Pt electrocatalysts displaying an increasing amount of the Pt3Sn crystalline phase within their structure has been prepared by using controlled surface reactions (CSRs). This synthetic route results in the exclusive incorporation of Sn onto the Pt sites yielding Pt(1-x)Snx and Pt3Sn phases. As demonstrated by X-ray diffraction and transmission electron microscopy the amount of the Pt3Sn phase within the electrocatalysts can be controlled by tuning the reaction conditions in CSRs. CO and ethanol electrooxidation reactions were studied over these new type of Sn-Pt/C catalysts, demonstrating that the presence of the Pt3Sn structure effectively facilitates both processes, particularly the ethanol electrooxidation.

Original languageEnglish
Pages (from-to)83-91
Number of pages9
JournalApplied Catalysis B: Environmental
Volume91
Issue number1-2
DOIs
Publication statusPublished - Sep 7 2009

Keywords

  • Controlled surface reactions
  • Electrooxidation
  • Ethanol
  • PtSn
  • PtSn/C electrocatalysts
  • Sn-Pt interaction

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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