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Effect of palladium on gold in core-shell catalyst for electrooxidation of ethanol in alkaline medium

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Date
2021
Author(s)
Ruiz Montoya, José G.
Nunes, L. M.S.
Baena Moncada, Angélica María
Tremiliosi Filho, Germano
Morales Gomero, Juan Carlos
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Abstract
In this paper the effect of small amounts of palladium deposited on gold nanoparticles supported on Vulcan XC-72 carbon (core-shell structure denoted Au@Pd/C) is studied. Different nominal atomic compositional ratios of Au@Pdx maintaining fixed gold nuclei and varying the amount of palladium (x = 0.10; 0.80 and 1.60) were synthesized via seed growth method for the ethanol oxidation reaction in alkaline medium. UV–Vis spectrometric, X-ray powder diffraction, X-ray energy dispersive spectroscopy, transmission electron microscopy and electrochemical measurements were performed for the characterization of these catalysts. Electrocatalytic activity toward ethanol oxidation on Au@Pd/C catalysts were investigated by cyclic voltammetry and chronoamperometry showed that Au@Pd0.10/C electrocatalyst has the highest current density and low onset potential for ethanol oxidation reaction in alkaline medium. In-situ Fourier transform infrared spectroscopy measurements demonstrated that acetate is the main product of ethanol oxidation and CO2 can be slightest observed, the latter could be visualized in greater quantity on catalyst Au@Pd0.80/C catalyst.
URI
https://hdl.handle.net/20.500.12724/13375
DOI
https://doi.org/10.1016/j.ijhydene.2021.04.159
How to cite
Ruiz-Montoya, J.G., Nunes, L.M.S., Baena-Moncada, A.M., Tremiliosi-Filho, G. & Morales-Gomero, J.C. (2021). Effect of palladium on gold in core-shell catalyst for electrooxidation of ethanol in alkaline medium. International Journal of Hydrogen Energy. https://doi.org/10.1016/j.ijhydene.2021.04.159
Publisher
Elsevier
Area / Line of research
Productividad y empleo / Innovación: tecnologías y productos
Category / Subcategory
Pendiente / Pendiente
Subject
Nanopartículas
Electrocatálisis
Oxidación
Nanoparticles
Electrocatalysis
Oxidation
Journal
International Journal of Hydrogen Energy
Note
Indexado en Scopus
Collections
  • Ingeniería Industrial [93]


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