Synthesis of metallic copper nanoparticles coated with polypyrrole |
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Authors: | Yoshio Kobayashi Satoshi Ishida Kazuaki Ihara Yusuke Yasuda Toshiaki Morita Shinji Yamada |
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Affiliation: | (1) Department of Biomolecular Functional Engineering, College of Engineering, Ibaraki University, 4-12-1 Naka-narusawa-cho, Hitachi, Ibaraki 316-8511, Japan;(2) Materials Research Laboratory, Hitachi Ltd, 7-1-1 Omika-cho, Hitachi, Ibaraki 319-1292, Japan |
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Abstract: | This paper describes a method for polypyrrole (PPy) coating of metallic Cu nanoparticles in aqueous solution in atmosphere. Colloid solution of Cu nanoparticles was prepared by reducing Cu ions with the use of hydrazine in an aqueous solution dissolving citric acid and cetyltrimethylammonium bromide as stabilizers. The PPy coating was performed by polymerizing pyrrole with the use of hydrogen peroxide as an initiator in an aqueous colloid solution of the Cu nanoparticles. Ultraviolet–visible extinction measurements, transmission electron microscopy observation, and X-ray diffraction measurements revealed that the metallic Cu nanoparticles with a size of 27.6 ± 11.1 nm were coated with PPy. The obtained PPy-coated Cu particles were chemically stable even in atmosphere. |
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Keywords: | Copper Nanoparticle Coating Polypyrrole |
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