Oxidation Mechanism of Formic Acid on the Bismuth Adatom-Modified Pt(111) Surface

Oxidation Mechanism of Formic Acid on the Bismuth Adatom-Modified Pt(111) Surface

In order to improve catalytic processes, elucidation of reaction mechanisms is essential. Here, supported by a combination of experimental and computational results, the oxidation mechanism of formic acid on Pt(111) electrodes modified by the incorporation of bismuth adatoms is revealed. In the prop...

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Veröffentlicht in:Journal of the American Chemical Society 2014-09, Vol.136 (38), p.13110-13113
Hauptverfasser: Perales-Rondón, Juan Victor, Ferre-Vilaplana, Adolfo, Feliu, Juan M, Herrero, Enrique
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container_title Journal of the American Chemical Society
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creator Perales-Rondón, Juan Victor
Ferre-Vilaplana, Adolfo
Feliu, Juan M
Herrero, Enrique
description In order to improve catalytic processes, elucidation of reaction mechanisms is essential. Here, supported by a combination of experimental and computational results, the oxidation mechanism of formic acid on Pt(111) electrodes modified by the incorporation of bismuth adatoms is revealed. In the proposed model, formic acid is first physisorbed on bismuth and then deprotonated and chemisorbed in formate form, also on bismuth, from which configuration the C–H bond is cleaved, on a neighbor Pt site, yielding CO2. It was found computationally that the activation energy for the C–H bond cleavage step is negligible, which was also verified experimentally.
doi_str_mv 10.1021/ja505943h
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title Oxidation Mechanism of Formic Acid on the Bismuth Adatom-Modified Pt(111) Surface
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