Electrochemical Preparation of Cobalt Nano-particles in an Ionic Liquid

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  • KATAYAMA Yasushi
    Department of Applied Chemistry, Faculty of Science and Technology, Keio University
  • FUKUI Ryuta
    Department of Applied Chemistry, Faculty of Science and Technology, Keio University
  • MIURA Takashi
    Department of Applied Chemistry, Faculty of Science and Technology, Keio University

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Cobalt nano-particles have been prepared by reducing divalent cobalt species in an ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide at room-temperature. Potentiostatic cathodic reduction of divalent cobalt species was conducted on a platinum mesh electrode at −2.0 V vs. Ag/Ag(I) in the ionic liquid, resulting in the change of color of the ionic liquid from purple to black. The transmission electron microscope observation of the ionic liquid after the potentiostatic cathodic reduction showed formation of cobalt nano-particles with the diameters from 2 to 10 nm.

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  • Electrochemistry

    Electrochemistry 81 (7), 532-534, 2013

    公益社団法人　電気化学会

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