Patent ID: 7776777

Claim:
A method of preparing a nano-metal-supported catalyst, comprising: splitting cellulose fibers, thus preparing a cellulose catalyst support; growing carbon nanotubes on the prepared catalyst support; and supporting a nano-metal catalyst on the catalyst support having the carbon nanotubes grown thereon, wherein the supporting the nano-metal catalyst on the catalyst support having the carbon nanotubes grown thereon comprises (E) removing the catalyst metal for growing carbon nanotubes from the carbon nanotubes grown on the surface of the cellulose catalyst support and performing pretreatment for supporting the nano-metal catalyst, and (F) supporting the nano-metal catalyst on the surface of the carbon nanotubes grown on the surface of the cellulose catalyst support, which is pretreated, using chemical vapor deposition, and wherein the performing the pretreatment in (E) is conducted through hydrochloric acid solution treatment, water washing, drying, and treatment at 50˜70° C. for 5˜300 min using an acid mixture solution of nitric acid and sulfuric acid.