Journal ArticleDOI
Effect of Bi and Sn adatoms on formic acid and methanol oxidation at well defined platinum surfaces
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In this paper, the effect of adsorbing submonolayers of bismuth and tin onto single-crystal, polycrystalline and dispersed platinum electrodes on the oxidation of formic acid and methanol was investigated.Abstract:
The effect of adsorbing submonolayers of bismuth and tin onto single-crystal, polycrystalline and dispersed platinum electrodes on the oxidation of formic acid and methanol was investigated. While the oxidation of formic acid on Pt(111) was found to be enhanced by adsorbed sub-monolayers of bismuth, the oxidation of methanol was inhibited by all adsorbed coverages of both tin and bismuth on all electrodes. The adsorbed tin was found to be more stable on the dispersed Pt electrodes than on the smooth electrodes.read more
Citations
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Surface science studies of model fuel cell electrocatalysts
Nenad M. Markovic,Philip N. Ross +1 more
TL;DR: In this paper, the authors discuss progress in the understanding of electrocatalytic reactions through the study of model systems with surface spectroscopies and discuss the limitations of using pure metal single crystals and well-characterized bulk alloys as models for real catalysts.
Journal ArticleDOI
Underpotential deposition at single crystal surfaces of Au, Pt, Ag and other materials
Journal ArticleDOI
Mechanism and electrocatalysis in the direct methanol fuel cell
TL;DR: In this paper, a unified treatment of the mechanism of electrocatalysis of methanol oxidation on platinum and platinum-containing alloys is put forward, and the effect of various alloys are shown to be interpretable within this overall model.
Journal ArticleDOI
On the reaction pathway for methanol and carbon monoxide electrooxidation on Pt-Sn alloy versus Pt-Ru alloy surfaces
TL;DR: In this article, it was observed that a significant fraction of COads is oxidized at a much lower (<400 mV) potential than the rest of the COads, a phenomenon that does not occur on any other Pt and Pt-alloy surfaces examined in the same way.
Journal ArticleDOI
X-ray absorption spectroscopy of low temperature fuel cell catalysts.
Andrea E. Russell,Abigail Rose +1 more
TL;DR: XAS as a Characterization Method: Pt/C 4.1.
References
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Journal ArticleDOI
Preparation of monocrystalline Pt microelectrodes and electrochemical study of the plane surfaces cut in the direction of the {111} and {110} planes
Journal ArticleDOI
Electrochemical adsorption behaviour of platinum stepped surfaces in sulphuric acid solutions
TL;DR: In this article, a technique for the orientation, cutting and polishing of small platinum single-crystal planes is given whose angular accuracy is within 3 min. This is required for the preparation of stepped surfaces with a well-controlled step density.
Journal ArticleDOI
The role of anion on the electrochemical behaviour of a {111} platinum surface; an unusual splitting of the voltammogram in the hydrogen region
Journal ArticleDOI
The oxidation of formic acid at noble metal electrodes Part III. Intermediates and mechanism on platinum electrodes
Andrew Capon,Roger Parsons +1 more
TL;DR: In this paper, the charge required to oxidize the strongly bound intermediate on Pt electrodes in 1 M H2SO4 is determined from sweep measurements extrapolated to infinite speed, and from the oxidation of the intermediate in the absence of bulk reaction using a dipping technique.
Journal ArticleDOI
The mechanism of electrocatalytic oxidation of formic acid on Pt (100) and Pt (111) in sulphuric acid solution: an emirs study
TL;DR: In this paper, the oxidation of formic acid at single crystal Pt (111) and Pt (100) electrodes in aqueous sulphuric acid was investigated using in-situ IR spectroscopy.
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