Title
Synthesis of spherical copper-platinum nanoparticles by sonoelectrochemistry followed by conversion reaction
Date Issued
27 July 2015
Access level
metadata only access
Resource Type
journal article
Author(s)
Levi S.
Mancier V.
Rousse C.
Garcia O.L.
Mejia J.
Lucas S.
Fricoteaux P.
Publisher(s)
Elsevier B.V.
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.
Start page
567
End page
574
Volume
176
Language
English
OCDE Knowledge area
Electroquímica
Subjects
Scopus EID
2-s2.0-84938058148
Source
Electrochimica Acta
ISSN of the container
0013-4686
Sponsor(s)
This research received support from the QNano Project http://www.qnano-ri.eu which is financed by the European Community Research Infrastructures under the FP7Capacities Programme (Grant No. INFRA-2010-262163 ) and the Conseil Régional de la Marne for its financial support.
Sources of information:
Directorio de Producción Científica
Scopus