Method for producing metal nanoparticle

Abstract

The present invention discloses a method for producing metal nanoparticles, in which a metallic compound is first dissolved in a solvent to obtain a metal ionic solution, then the metal ionic solution is uniformly distributed on the carrier, and finally electrons provided from an electron source are shot at the carrier for reducing the metal ions to the metal nanoparticles.

1 . A method for producing metal nanoparticles, comprising steps of: 
 (a) Dissolving a metallic compound in a solvent to obtain a metal ionic solution;    (b) Uniformly distributing said metal ionic solution on a carrier;    (c) Shooting electrons from an electron source at said carrier for reducing said metal ions to metal nanoparticles.    
     
     
         2 . The method as claimed in  claim 1 , wherein said metallic compound is a metallic salt.  
     
     
         3 . The method as claimed in  claim 2 , wherein said metallic salt is formed by a metal selected from the group consisting of Pt, Au, Pd, Ag, Cu, Ti, Zn, Fe, Ni, Zr and Al.  
     
     
         4 . The method as claimed in  claim 1 , wherein said metallic compound is a metallic complex.  
     
     
         5 . The method as claimed in  claim 1 , wherein said metallic complex is formed by a metal selected from the group consisting of Pt, Au, Pd, Ag, Cu, Ti, Zn, Fe, Ni, Zr and Al.  
     
     
         6 . The method as claimed in  claim 1 , wherein said metallic compound is PtCl 4 , AuCl 4 , AgNO 3 , CuSO 4  or Fe(NO 3 ) 2 .  
     
     
         7 . The method as claimed in  claim 1 , wherein said solvent is ultra-pure water or deionized water.  
     
     
         8 . The method as claimed in  claim 1 , wherein said carrier is made by a material capable of attaching said metal ionic solution.  
     
     
         9 . The method as claimed in  claim 1 , wherein said carrier is made by polymer, ceramic membrane, lacy carbon, non-woven fabric or carbon cloth.  
     
     
         10 . The method as claimed in  claim 1 , wherein said metal ionic solution is distributed on carrier by dipping treatment, spin coating or spray coating.  
     
     
         11 . The method as claimed in  claim 1 , wherein said step (b) is performed at room temperature.  
     
     
         12 . The method as claimed in  claim 1 , wherein carrier is dried after distributing said metal ionic solution thereon.  
     
     
         13 . The method as claimed in  claim 1 , wherein said electron source is a transmission electron microscope (TEM), a scanning electron microscope (SEM) or a DC power supply.