Influence of beryllium cations on the electrochemical oxidation of methanol on stepped platinum surfaces in alkaline solution

Gonzalo García, Chantal Stoffelsma, Paramaconi Rodriguez, Marc T M Koper

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10 Citations (Scopus)
205 Downloads (Pure)

Abstract

The role of beryllium on the oxidation of methanol on Pt stepped surfaces (Pt[(n-1) (111)x(110)]) orientation—Pt(553) with n = 5, Pt(554) n = 10, Pt(151514) n = 30), Pt(111) and Pt(110) single crystals in alkaline media was studied by cyclic voltammetry and Fourier transform infrared spectroscopy (FTIRS). The results suggest that under the conditions of the experiment, the methanol oxidation reaction follows a direct pathway with formaldehyde and formate as reaction intermediates. The combination of OHads and beryllium blocks the adsorption and oxidation of methanol on Pt(111), but appears to promote the complete oxidation of methanol to carbon dioxide/carbonate on Pt(110).
Original languageEnglish
Pages (from-to)267-271
Number of pages5
JournalSurface Science
Volume631
Early online date27 Jun 2014
DOIs
Publication statusPublished - 1 Jan 2015

Keywords

  • Electrocatalysis
  • Methanol oxidation
  • Platinum single crystals
  • Alkaline solution
  • beryllium

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Condensed Matter Physics
  • Materials Chemistry
  • Surfaces, Coatings and Films

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