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Preparation of Micro-nano-sized Cu-Ag Core-shell Particles by a Quick-making Method and their Conductivity |
Bin CAI,Zhejuan ZHANG( ),Zhuo SUN |
School of Physics and Materials Science, Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, East China Normal University, Shanghai 200062, China |
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Cite this article:
Bin CAI,Zhejuan ZHANG,Zhuo SUN. Preparation of Micro-nano-sized Cu-Ag Core-shell Particles by a Quick-making Method and their Conductivity. Chinese Journal of Materials Research, 2016, 30(12): 903-908.
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Abstract Micro- and nano-sized Cu and Ag core-shell particles were fabricated by a simple and quick-making method with copper micro-particles, gelatin and silver sulfate (Ag2SO4) as raw materials, and citric acid trisodium (SC) as reducing- and chelating-agent. The influence of SC and Ag2SO4 on the morphologies and oxidation resistance of Cu-Ag particles were investigated. The results showed that the dosage of SC directly affected the uniformity and morphology of the Ag coated Cu particles. The more the Ag2SO4 was used, the lower the conductive resistance was for the prepared particles. With dosages of 1.5 g and 8.0 g for SC and Ag2SO4respectively, the Cu- particles could be covered by Ag nanoparticles completely to form core-shell structured Cu-Ag particles, thereafter, the electrical resistance of sheets made of which can reach as low as 1.1Ω.
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Received: 17 November 2015
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Fund: *Supported by National Natural Science Foundation of China No.11204082, Shanghai Natural Fund Project No.16ZR1410700, School-enterprise Cooperation in Minhang District of Shanghai No. 2015MH218 and Postgraduate Scientific Research and Innovative Practice Funding Program of ECNU No. YJSKC2015-32. |
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