Patent ID: 9567349
Date: 2017-02-14
CPC Classifications: B22F,C07F,Y10T

Claim:
1. A method of preparing a spherical Ag nano-particle, the preparing method comprising: (a) performing a first reaction of a reaction solution containing an Ag precursor and oleylamine by stirring the reaction solution at 80 to 110° C. for 10 to 120 minutes in an air atmosphere; (b) performing a second reaction of the reaction solution at 120 to 150° C. for 1 hour or more without stirring the reaction solution in an air atmosphere; (c) cooling the reaction solution obtained in step (b) to room temperature after the performing of the second reaction; and (d) obtaining the spherical Ag nano-particle from the cooled reaction solution of step (c) by repeatedly performing centrifugation of the cooled reaction solution two times or more.