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Adsorbed formate: the key intermediate in the oxidation of formic acid on platinum electrodes
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It is confirmed that the dehydration of formic acid on Pt electrodes requires adjacent empty sites, and it is demonstrated that the reaction follows an apparently paradoxical electrochemical mechanism, in which an oxidation is immediately followed by a reduction.Abstract:
The electrooxidation of formic acid on Pt and other noble metal electrodes proceeds through a dual-path mechanism, composed of a direct path and an indirect path through adsorbed carbon monoxide, a poisoning intermediate. Adsorbed formate had been identified as the reactive intermediate in the direct path. Here we show that actually it is also the intermediate in the indirect path and is, hence, the key reaction intermediate, common to both the direct and indirect paths. Furthermore, it is confirmed that the dehydration of formic acid on Pt electrodes requires adjacent empty sites, and it is demonstrated that the reaction follows an apparently paradoxical electrochemical mechanism, in which an oxidation is immediately followed by a reduction.read more
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Recent advances in porous Pt-based nanostructures: synthesis and electrochemical applications
TL;DR: This tutorial review attempts to summarize the recent important progress towards the development of porous Pt-based nanostructured materials, with special emphasis on fabrication methods and advanced electrochemical applications, such as electrocatalysis and electrochemical sensors.
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Recent advances in palladium-based electrocatalysts for fuel cell reactions and hydrogen evolution reaction
TL;DR: The recent advances in Pd-based electrocatalysts for hydrogen evolution reaction (HER), and fuel cell reactions including hydrogen oxidation reaction (HOR), oxygen reduction reaction (ORR), ethanol oxide reaction (EOR), and formic acid oxidation reaction(FAOR) are summarized in this article.
Journal ArticleDOI
Electrocatalysis of formic acid on palladium and platinum surfaces: from fundamental mechanisms to fuel cell applications
TL;DR: A brief overview of recent progress in the mechanistic studies of FAO, the synthesis of novel Pd- and Pt-based nanocatalysts as well as their practical applications in DFAFCs is provided with a focus on discussing studies significantly contributing to these areas in the past five years.
Journal ArticleDOI
Importance of acid-base equilibrium in electrocatalytic oxidation of formic acid on platinum.
TL;DR: Through systematic examination of the reaction over a wide pH range by cyclic voltammetry and surface-enhanced infrared spectroscopy, it is shown that the formate ion is the major reactant over the whole pH range examined, even in strong acid.
Journal ArticleDOI
Mechanism of the Electrocatalytic Oxidation of Formic Acid on Metals
TL;DR: In this article, a detailed spectrokinetic study of the electrocatalytic oxidation of formic acid on Au and Pt electrodes using ATR-SEIRAS has been presented.
References
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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.
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Electrosorption of methanol on a platinum electrode. IR spectroscopic evidence for adsorbed co species
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Surface-enhanced IR absorption on platinum nanoparticles: an application to real-time monitoring of electrocatalytic reactions
TL;DR: Molecules adsorbed on Pt nanoparticles prepared on Si by a chemical deposition technique exhibit extremely strong IR absorption, which enables fast time-resolved IR monitoring of electrocatalytic reactions.
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Formic Acid Decomposition on Polycrystalline Platinum and Palladized Platinum Electrodes
TL;DR: In this article, a formic acid decomposition reaction is examined as a probe of catalytic properties of polycrystalline platinum and palladized platinum electrodes, and it is shown that only a negligible amount of surface CO is formed.
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Mechanistic study of electrocatalytic oxidation of formic acid at platinum in acidic solution by time-resolved surface-enhanced infrared absorption spectroscopy.
TL;DR: The complex voltammetric behavior of the electrocatalytic oxidation of formic acid on a polycrystalline Pt surface is comprehensively explained at the molecular scale by taking all these effects into account.