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Preparation and characterization of copper/silver bimetallic nanowires with core‐shell structure
Author(s) -
Zhao Jun,
Zhang Dongming,
Zhang Xiuli
Publication year - 2015
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.5743
Subject(s) - bimetallic strip , copper , x ray photoelectron spectroscopy , scanning electron microscope , composite number , nanowire , microanalysis , materials science , chemical engineering , chemistry , analytical chemistry (journal) , metal , nanotechnology , metallurgy , composite material , organic chemistry , engineering
Core‐shell copper/silver bimetallic nanowires were prepared by replacement reaction with citric acid and polyvinylpyrollidone at room temperature. A uniform silver coating was obtained by strictly controlling the molar ratio of Ag/Cu. The copper/silver composite was characterized by X‐ray diffraction, scanning electron microscopy, electron probe microanalysis and X‐ray photoelectron spectroscopy. Microscopic analysis shows that a well‐copper/silver core‐shell structure was formed. Thermo‐gravimetry and differential thermal analysis to the composite nanowires show that the silver coatings efficiently inhibit the oxidation of Cu. Copyright © 2015 John Wiley & Sons, Ltd.