Abstract
Carbon nanostructures (fullerenes and nanotubes) were obtained using the carbon arc technique employing homogeneous carbon−iron and carbon−cobalt−nickel anodes. The influence of these catalysts on the arc plasma was studied by optical emission spectroscopy to determine temperatures and C2 radical content in the arc zone. The solid products were analyzed by spectrophotometry and mass spectrometry to determine the C60 yield and relative mass distributions of the higher fullerenes, respectively. SEM and TEM techniques were used to affirm the presence of carbon nanotubes in the resulting soot product.
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