Role of Microwave Irradiation for the Preparation of Nickel Nanoparticles by a Polyol Method

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  • Tsuji Masaharu
    Institute for Materials Chemistry and Engineering, Kyushu University | CREST, JST
  • Hashimoto Masayuki
    Department of Applied Science for Electronics and Materials, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
  • Nishizawa Yuki
    Department of Applied Science for Electronics and Materials, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
  • Tsuji Takeshi
    CREST, JST | Institute for Materials Chemistry and Engineering, Kyushu University

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  • Role of Microwave Irradiation for the Prepareation of Nickel Nanoparticles by a Polyol Method

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Abstract

Ni(OH)2 was reduced by ethylene glycol, in the presence of polyvinylpyrrolidone (PVP) under microwave (MW) heating in a pulse mode and oil-bath heating. The temperature profile in the two heating methods was controlled to be identical in order to determine whether the role of MW irradiation for the preparation of nickel nanoparticles is only thermal or not. Aggregated spherical nickel nanoparticles with diameters of 52 nm were produced under MW heating for 35 min, while larger monodispersed spherical nanoparticles with diameters of 204 nm were prepared in oil-bath heating for 35 min. Different size and dispersion pattern of nanoparticles under the two heating methods indicated that MW irradiation affects the nucleation, growth, and aggregation of Ni nanoparticles.

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