TY - JOUR
T1 - Effect of palladium on gold in core-shell catalyst for electrooxidation of ethanol in alkaline medium
AU - Ruiz-Montoya, José G.
AU - Nunes, Luiza M.S.
AU - Baena-Moncada, Angélica M.
AU - Tremiliosi-Filho, Germano
AU - Morales-Gomero, Juan Carlos
N1 - Funding Information:
J. G. R-M thanks the Faculty of Sciences of the UNI for the logistical support. L. M. S. N thanks to acknowledge Brazilian FAPESP agency (Postdoctoral fellowship Nº 18807–5) for the financial support provided to this research. Also, a special thanks to Ph.D. Amanda C. Garcia, for all the academic support for the in situ FTIR experiments.
Funding Information:
J. G. R-M thanks the Faculty of Sciences of the UNI for the logistical support. L. M. S. N thanks to acknowledge Brazilian FAPESP agency (Postdoctoral fellowship N? 18807?5) for the financial support provided to this research. Also, a special thanks to Ph.D. Amanda C. Garcia, for all the academic support for the in situ FTIR experiments.
Publisher Copyright:
© 2021 Hydrogen Energy Publications LLC
PY - 2021/7/6
Y1 - 2021/7/6
N2 - 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.
AB - 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.
KW - Core-shell nanoparticles
KW - Electrocatalysis
KW - Ethanol oxidation reaction (EOR)
KW - Gold
KW - In-situ FTIR
KW - Palladium
UR - https://hdl.handle.net/20.500.12724/13375
UR - http://www.scopus.com/inward/record.url?scp=85107045543&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2021.04.159
DO - 10.1016/j.ijhydene.2021.04.159
M3 - Artículo (Contribución a Revista)
AN - SCOPUS:85107045543
SN - 0360-3199
VL - 46
SP - 23670
EP - 23681
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 46
ER -
