Metal nano particle and method for surface treating the same

Abstract

Disclosed herein is a method for surface treating metal nano particles, including: surface treating metal nano particles with an alkanol amine containing solution.

What is claimed is: 
     
         1 . A method for surface treating metal nano particles, comprising:
 surface treating metal nano particles with an alkanol amine containing solution.   
     
     
         2 . The method according to  claim 1 , wherein the surface treating of the metal nano particles includes removing chloride ion adhered on the surfaces of the metal nano particles with the alkanol amine. 
     
     
         3 . The method according to  claim 1 , wherein the surface treating of the metal nano particles further includes substituting chloride ion adhered on the surfaces of the metal nano particles into the alkanol amine. 
     
     
         4 . The method according to  claim 1 , wherein the surface treating of the metal nano particles further includes:
 preparing a clean solution containing at least one of ethanolamine, diethanaolamine, and triethanolamine; and   preparing a mixing solution by mixing the metal nano particles with the cleaning solution.   
     
     
         5 . The method according to  claim 1 , wherein a concentration of the alkanol amine of the solution is 10 wt % or more. 
     
     
         6 . The method according to  claim 1 , further comprising cleaning the metal nano particles with alcohol or toluene to remove a surfactant on the surfaces of the metal nano particles. 
     
     
         7 . The method according to  claim 1 , further comprising:
 drying the metal nano particles.   
     
     
         8 . The method according to  claim 7 , wherein after the drying of the metal nano particles, the concentration of the chloride ion on the surfaces of the metal nano particles measured by using ion chromatography is less than 100 ppm. 
     
     
         9 . The method according to  claim 8 , wherein after the drying of the metal nano particles, the concentration of the chloride ion on the surfaces of the metal nano particles measured by using ion chromatography is less than 10 ppm. 
     
     
         10 . Metal nano particles, wherein the metal nano particles are surface-treated with an alkanol amine containing solution and after the metal nano particles are dried, the concentration of the chloride ion on the surfaces of the metal nano particles measured by using ion chromatography is less than 100 ppm. 
     
     
         11 . The Metal nano particles according to  claim 10 , wherein the concentration of the chloride ion is less than 10 ppm.