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Raman spectra of bare and different plasma atmosphere treated MWCNTs.
| Type of MWCNTs | ID/IG Ratio | RSD (%) | I2D/IG | RSD (%) | I2D/ID | RSD (%) |
|---|---|---|---|---|---|---|
| As-grown MWCNTs | 0.998 | 2.545 | 0.225 | 2.545 | 0.125 | 4.421 |
| NH3/MWCNTs | 1.034 | 1.654 | 0.211 | 1.654 | 0.141 | 2.544 |
| H2/MWCNTs | 1.017 | 3.934 | 0.198 | 3.934 | 0.138 | 3.534 |
| O2/MWCNTs | 1.089 | 2.911 | 0.165 | 2.911 | 0.088 | 3.310 |
