Nanocrater catalyst in metal nanoparticles and method for preparing the same

Abstract

Disclosed are a nanocrater catalyst in metal nanoparticles with a nanocrater form of hole structure in center of the catalyst which is useful for manufacturing nano-sized materials and/or articles with desired structure and characteristics, a preparation method thereof including a plasma etching and chemical etching process (“PTCE process”), and nano-sized materials and/or articles manufactured by using the nanocrater catalyst in metal nanoparticles.

1 . A nanocrater catalyst in metal nanoparticles having a nano-sized crater form of hole at the center of the catalyst, which has vacancy and dislocation between metal nanoparticles of the catalyst. 
     
     
         2 . The nanocrater catalyst in metal nanoparticles according to  claim 1 , wherein metal ingredient of the catalyst comprises at least one selected from elements belonging to Groups 3 to 14 in the Periodic Table. 
     
     
         3 . The nanocrater catalyst in metal nanoparticles according to  claim 2 , wherein the metal ingredient is one or two selected from iron (Fe) and cobalt (Co). 
     
     
         4 . The nanocrater catalyst in metal nanoparticles according to  claim 1 , wherein the hole has a size ranging from 1 to 50 nm. 
     
     
         5 . The nanocrater catalyst in metal nanoparticles according to  claim 1 , wherein the catalyst has a thickness ranging from 1 to 20 nm.