Synthesis of spherical copper-platinum nanoparticles by sonoelectrochemistry followed by conversion reaction

Samuel Levi; Valérie Mancier; Céline Rousse; Omar Lozano Garcia; Jorge Humberto Mejia Mendoza; Maribel Guzman; Stéphane Lucas; Patrick Fricoteaux

doi:10.1016/j.electacta.2015.06.155

Synthesis of spherical copper-platinum nanoparticles by sonoelectrochemistry followed by conversion reaction

Samuel Levi, Valérie Mancier, Céline Rousse, Omar Lozano Garcia, Jorge Humberto Mejia Mendoza, Maribel Guzman, Stéphane Lucas, Patrick Fricoteaux

Résultats de recherche: Contribution à un journal/une revue › Article › Revue par des pairs

Résumé

Abstract Cu-Pt nanopowders were prepared by sonoelectrochemistry followed by a displacement reaction. The first method provides pure copper particles. In the second method the surface copper atoms are replaced by platinum atoms. The influence of dissolved oxygen during the conversion reaction was also studied. Nanoparticles (NPs) were observed by transmission electron microscopy (TEM) and their size distribution was determined by centrifugal liquid sedimentation (CLS). The mean diameter of isolated particles was found to be around 8 nm. Their composition was studied by energy dispersive X-ray spectroscopy (EDXS) and X-Ray photoelectron spectrometry (XPS). These analyses and X-ray diffraction (XRD) patterns showed that the particle shell is a solid solution of Cu and Pt. The shell composition is heterogeneous with a richer Pt percentage on its surface.

langue originale	Anglais
Numéro d'article	25322
Pages (de - à)	567-574
Nombre de pages	8
journal	Electrochimica Acta
Volume	176
Les DOIs	https://doi.org/10.1016/j.electacta.2015.06.155
Etat de la publication	Publié - 27 juil. 2015

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10.1016/j.electacta.2015.06.155

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@article{e8325b30d87f4063a03f3ea3d9c9cfcb,

title = "Synthesis of spherical copper-platinum nanoparticles by sonoelectrochemistry followed by conversion reaction",

abstract = "Abstract Cu-Pt nanopowders were prepared by sonoelectrochemistry followed by a displacement reaction. The first method provides pure copper particles. In the second method the surface copper atoms are replaced by platinum atoms. The influence of dissolved oxygen during the conversion reaction was also studied. Nanoparticles (NPs) were observed by transmission electron microscopy (TEM) and their size distribution was determined by centrifugal liquid sedimentation (CLS). The mean diameter of isolated particles was found to be around 8 nm. Their composition was studied by energy dispersive X-ray spectroscopy (EDXS) and X-Ray photoelectron spectrometry (XPS). These analyses and X-ray diffraction (XRD) patterns showed that the particle shell is a solid solution of Cu and Pt. The shell composition is heterogeneous with a richer Pt percentage on its surface.",

keywords = "copper, dissolved oxygen, nanoparticles, platinum, sonoelectrochemistry",

author = "Samuel Levi and Val{\'e}rie Mancier and C{\'e}line Rousse and {Lozano Garcia}, Omar and {Mejia Mendoza}, {Jorge Humberto} and Maribel Guzman and St{\'e}phane Lucas and Patrick Fricoteaux",

year = "2015",

month = jul,

day = "27",

doi = "10.1016/j.electacta.2015.06.155",

language = "English",

volume = "176",

pages = "567--574",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Pergamon Press",

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TY - JOUR

T1 - Synthesis of spherical copper-platinum nanoparticles by sonoelectrochemistry followed by conversion reaction

AU - Levi, Samuel

AU - Mancier, Valérie

AU - Rousse, Céline

AU - Lozano Garcia, Omar

AU - Mejia Mendoza, Jorge Humberto

AU - Guzman, Maribel

AU - Lucas, Stéphane

AU - Fricoteaux, Patrick

PY - 2015/7/27

Y1 - 2015/7/27

N2 - Abstract Cu-Pt nanopowders were prepared by sonoelectrochemistry followed by a displacement reaction. The first method provides pure copper particles. In the second method the surface copper atoms are replaced by platinum atoms. The influence of dissolved oxygen during the conversion reaction was also studied. Nanoparticles (NPs) were observed by transmission electron microscopy (TEM) and their size distribution was determined by centrifugal liquid sedimentation (CLS). The mean diameter of isolated particles was found to be around 8 nm. Their composition was studied by energy dispersive X-ray spectroscopy (EDXS) and X-Ray photoelectron spectrometry (XPS). These analyses and X-ray diffraction (XRD) patterns showed that the particle shell is a solid solution of Cu and Pt. The shell composition is heterogeneous with a richer Pt percentage on its surface.

AB - Abstract Cu-Pt nanopowders were prepared by sonoelectrochemistry followed by a displacement reaction. The first method provides pure copper particles. In the second method the surface copper atoms are replaced by platinum atoms. The influence of dissolved oxygen during the conversion reaction was also studied. Nanoparticles (NPs) were observed by transmission electron microscopy (TEM) and their size distribution was determined by centrifugal liquid sedimentation (CLS). The mean diameter of isolated particles was found to be around 8 nm. Their composition was studied by energy dispersive X-ray spectroscopy (EDXS) and X-Ray photoelectron spectrometry (XPS). These analyses and X-ray diffraction (XRD) patterns showed that the particle shell is a solid solution of Cu and Pt. The shell composition is heterogeneous with a richer Pt percentage on its surface.

KW - copper

KW - dissolved oxygen

KW - nanoparticles

KW - platinum

KW - sonoelectrochemistry

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U2 - 10.1016/j.electacta.2015.06.155

DO - 10.1016/j.electacta.2015.06.155

M3 - Article

AN - SCOPUS:84938058148

SN - 0013-4686

VL - 176

SP - 567

EP - 574

JO - Electrochimica Acta

JF - Electrochimica Acta

M1 - 25322

ER -

Synthesis of spherical copper-platinum nanoparticles by sonoelectrochemistry followed by conversion reaction

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Synthèse, Irradiation et Analyse de Matériaux (SIAM) (2016 - ...)

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