| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing metallic fine particles, when metal ions are electrolytically reduced to produce metallic fine particles, which reduces variation in particle diameters, suppresses the formation of the metallic fine particles into a dendrite shape, and produces the uniform metallic fine particles. <P>SOLUTION: Regarding the method for producing metallic fine particles in which, in an electrolytic water solution containing the ions of a metal (A) and the ions of a metal (B), the metal (B) is precipitated by electrolytic reduction, and further, the fine particles of the metal (A) are precipitated, the molar concentration ratio between the ions of the metal (B) and the ions of the metal (A), (B/A) is ≤0.5, also, the ions of the metal (B) are the ions precipitated at a potential nobler than the precipitation potential of the ions of the metal (A), and by applying electric current to a space between the anode and the cathode in the electrolytic water solution in such a manner that the cathode electrode potential reaches a potential of ≤-1V to the reference electrode of silver/silver chloride, the metal (B) is precipitated on the surface of the cathode by the electrolytic reduction, and the fine particles of the metal (A) being the baser metal are precipitated on the precipitated metal (B) or in the vicinity of the metal (B). <P>COPYRIGHT: (C)2012,JPO&INPIT |
