Figure 5

Raman spectra of NMWCNT-72 (a), NMWCNT-48 (b), OMWCNT-72 (c), OMWCNT-48 (d), PMWCNT (e) and MWCNT (f). The D-band and G-band were observed at 1335 cm−1 and 1576 cm−1, respectively.
Raman spectra of NMWCNT-72 (a), NMWCNT-48 (b), OMWCNT-72 (c), OMWCNT-48 (d), PMWCNT (e) and MWCNT (f). The D-band and G-band were observed at 1335 cm−1 and 1576 cm−1, respectively.