Preparation of double-walled carbon nanotubes from fullerene waste soot by arc-discharge

Fullerene waste soot (FWS) was used as raw material to fabricate double-walled carbon nanotubes (DWCNTs) by arc-discharge in a mixture of Ar and H2 (2:1, v/v) at 300 Torr. The results of transmission electron microscope and Raman spectroscopy indicate that the high quality FWS-derived DWCNTs can be synthesized by arc-discharge method.