Patent ID: 8173210
Filing Date: 2012-05-08
Classification: B22F,C09D,Y10T

Abstract:
1. A method for surface modification of non-dispersible metal nanoparticles, the method comprising: mixing metal nanoparticles having an amorphous carbon layer on the particle surface and alcohol or thiol solvent; mixing a capping molecule having a carboxylic group in the mixed solution; and separating the metal nanoparticles from the mixed solution, wherein the mixing metal nanoparticles with an alcohol or thiol solvent further comprises adding at least one acid selected from the group consisting of hydrochloric acid, sulphuric acid, and nitric acid, wherein the concentration of the acid is about 0.0001 to about 1M and the acid is added about 0.1 ml to about 10 ml with respect to 1 g of the metal nanoparticles, wherein the reaction time of the mixing metal nanoparticles with an alcohol or thiol solvent is about 1 to about 30 minutes if the acid is added.