The role of bridge-bonded adsorbed formate in the electrocatalytic oxidation of formic acid on platinum

Masatoshi Osawa, Kei-ichi Komatsu, Gabor Samjeske, Taro Uchida, Tamio Ikeshoji, Angel Cuesta, Claudio Gutierrez

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Abstract

A bridge too far: Time-resolved surface-enhanced infrared spectroscopy (SEIRAS) coupled with chronoamperometry shows that formic acid is oxidized via bridge-bonded adsorbed formate, and that formate decomposition is the rate-determining step in the electrooxidation of formic acid to CO2 on Pt. The contribution of direct oxidation of formic acid via weakly adsorbed HCOOH is negligible at best.
Original languageEnglish
Pages (from-to)1159-1163
Number of pages5
JournalAngewandte Chemie International Edition
Volume50
Issue number5
Early online date27 Dec 2010
DOIs
Publication statusPublished - 1 Feb 2011

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Keywords

  • electrochemistry
  • formic acid
  • heterogeneous catalysis
  • platinum
  • surface chemistry

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