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

José G. Ruiz-Montoya, Luiza M.S. Nunes, Angélica M. Baena-Moncada, Germano Tremiliosi-Filho, Juan Carlos Morales-Gomero

Resultado de la investigación: Contribución a una revistaArtículo (Contribución a Revista)revisión exhaustiva

Resumen

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.

Idioma originalInglés
Páginas (desde-hasta)23670-23681
Número de páginas12
PublicaciónInternational Journal of Hydrogen Energy
Volumen46
N.º46
DOI
EstadoPublicada - 6 jul 2021

COAR

  • Artículo

Categoría OCDE

  • Ingeniería industrial

Temas Repositorio Ulima

  • Pendiente

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