Patent ID: 8236272

Claim:
A method of synthesizing multi-walled carbon nanotubes, comprising: driving a reaction in a Chemical Vapor Deposition (CVD) furnace; generating at least one multi-walled carbon nanotube through the reaction in the CVD furnace; depositing a catalyst on the CVD furnace, wherein the catalyst is a mixture of at least one of an iron catalyst source and a catalyst support, wherein the iron catalyst source is a cyclopentadienyliron dicarbonyl dimer [CpFe(CO) 2 ] 2 , wherein the percentage by weight of the cyclopentadienyliron dicarbonyl dimer [CpFe(CO) 2 ] 2 in relation to a gamma phase of alumina (γ-Al 2 O 3 ) ranges from 80% to 100%; and wherein the catalyst support is a gamma-phase of alumina (γ-Al 2 O 3 ); driving a carbon source with a carrier gas to the CVD furnace; and decomposing the carbon source in the presence of the catalyst, under a sufficient gas pressure for a sufficient time, to grow the multiwalled carbon nanotube at a target temperature, wherein the carbon source is at least one of a carbon-source gas and an auxiliary carbon source.