| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain a core shell type metal nano particles comprising a core component comprising a metal having a high ionization tendency and a shell comprising a metal having a lower ionization tendency which covers the core component. <P>SOLUTION: In the method for producing a core-shell type metal nanoparticle comprising a core component including a metal A having a higher ionization tendency and a shell including a metal B having a lower ionization tendency which covers the core component, the method comprises: a stage (1) where the ions of the metal A are reduced in a deoxidized high boiling point solvent so as to form the fine particles of the metal A; and a stage (2) where, in a state where the high boiling point solvent solution comprising the fine particles of the metal A obtained by the stage (1) is retained to a temperature in which the ions of the metal B are reduced to the metal B by≥80% for 1 min, a solution comprising the ions of the metal B is added. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
