Novel Method of Evaluating the Purity of Multiwall Carbon Nanotubes Using Raman Spectroscopy
Figure 2
SEM images of purity-controlled MWCNT samples by mixing amorphous carbon particles and highly pure MWCNTs: (a) 0%, (b) 20%, (c) 40%, (d) 60%, (e) 80%, and (f) 100%.