Preparing method of Ag nano-particle and hydrophobic spherical Ag nano-particle prepared using the same

摘要

Provided is a preparing method of an Ag nano-particle for mass-producing Ag nano-particles, the method including: performing a first reaction of a reaction solution containing an Ag precursor and oleylamine at a set first temperature T1; performing a second reaction of the reaction solution at a second temperature T2 set so as to be higher than the first temperature; and obtaining a reactant from the reaction solution, wherein at least one of the first and second reactions is performed in a state in which the reaction solution is not stirred.

主权项

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.