Diameter Control of Single-Wall Carbon Nanotubes by the Catalytic Chemical Vapor Deposition Method

摘要

Single-walled carbon nanotubes (SWNTs) have been synthesized by the pyrolysis of acetylene over well-dispersed metal particles (cobalt and iron) embedded on catalyst supports such as commercially available zeolites and in-house mesoporous silica at temperature above 800℃. Pristine specimens produced with different catalyst supports are characterized by transmission electron microscopy and Raman spectroscopy. It is found that some SWNTs in the pristine soot have a diameter distribution nearly equivalent to the surface pore size of the each catalyst supports.