TY - JOUR
T1 - Electrochemical Deposition of Pd@Pd(OH)2Core-Shell Nanoparticles onto Glassy Carbon from a Deep Eutectic Solvent (Reline) and their Use as Electrocatalyst for the Methanol Oxidation Reaction
AU - Juárez-Marmolejo, L.
AU - Maldonado-Teodocio, B.
AU - Montes De Oca-Yemha, M. G.
AU - Romero-Romo, M.
AU - Ramírez-Silva, M. T.
AU - Arce-Estrada, E. M.
AU - Morales-Gil, P.
AU - Mostany, J.
AU - Palomar-Pardavé, M.
N1 - Publisher Copyright:
© 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.
PY - 2020/1/8
Y1 - 2020/1/8
N2 - Pd@Pd(OH)2 core-shell nanoparticles were potentiostatically electrodeposited onto a glassy carbon electrode, GCE, from Pd(II) ions dissolved in the reline deep eutectic solvent. It is shown that the GCE/Pd@Pd(OH)2-modified electrode displays a high catalytic activity towards the methanol electrochemical oxidation reaction (MOR) in alkaline solution, revealing a mass activity of (2370 450) mA mgPd-1 at the peak potential (for CVs recorded at 0.1 V s-1), much greater than those reported to date for other nanoparticles, namely: Pd, Cu1Pd2, Pd4Ag1, PdFe, PtPdPt, Pt or Pt2Ru1, synthesized by means of technically complicated, expensive and time-consuming methods or electrodeposited from aqueous media. In particular, the steady-state current reported for PdNPs electrodeposited from aqueous media towards MOR depicted values around 3 mA mgPd-1, while those from DES (this work) reached values around 42 mA mgPd-1. Furthermore, it is shown that the Pd@Pd(OH)2 nanoparticles displayed excellent poisoning tolerances, from 2 to 8, depending on the applied potential scan rate and anodic switching potential, which remains practically constant after 200 voltammetric cycles.
AB - Pd@Pd(OH)2 core-shell nanoparticles were potentiostatically electrodeposited onto a glassy carbon electrode, GCE, from Pd(II) ions dissolved in the reline deep eutectic solvent. It is shown that the GCE/Pd@Pd(OH)2-modified electrode displays a high catalytic activity towards the methanol electrochemical oxidation reaction (MOR) in alkaline solution, revealing a mass activity of (2370 450) mA mgPd-1 at the peak potential (for CVs recorded at 0.1 V s-1), much greater than those reported to date for other nanoparticles, namely: Pd, Cu1Pd2, Pd4Ag1, PdFe, PtPdPt, Pt or Pt2Ru1, synthesized by means of technically complicated, expensive and time-consuming methods or electrodeposited from aqueous media. In particular, the steady-state current reported for PdNPs electrodeposited from aqueous media towards MOR depicted values around 3 mA mgPd-1, while those from DES (this work) reached values around 42 mA mgPd-1. Furthermore, it is shown that the Pd@Pd(OH)2 nanoparticles displayed excellent poisoning tolerances, from 2 to 8, depending on the applied potential scan rate and anodic switching potential, which remains practically constant after 200 voltammetric cycles.
UR - http://www.scopus.com/inward/record.url?scp=85094955625&partnerID=8YFLogxK
U2 - 10.1149/1945-7111/aba7d9
DO - 10.1149/1945-7111/aba7d9
M3 - Artículo
AN - SCOPUS:85094955625
SN - 0013-4651
VL - 167
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 11
M1 - 112509
ER -