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XPS results of MWCNT-2 and MWCNT-30 samples obtained using a Kratos Axis Ultra DLD instrument and spectra were calibrated by C 1s at 284.6 eV
| Sample | Peak | Position (eV) | Full width (eV) | Raw area (counts/s) | Conc (wt%) |
|---|---|---|---|---|---|
| MWCNT-2 | O 1s | 531.84 | 3.47 | 4,491.8 | 7.3 |
| C 1s | 284.40 | 0.78 | 20,284.3 | 92.7 | |
| MWCNT-30 | O 1s | 531.72 | 3.54 | 5,163.3 | 11.5 |
| C 1s | 284.34 | 0.83 | 19,559.6 | 88.5 |
Abbreviations: MWCNT, multiwalled carbon nanotube; XPS, X-ray photoelectron spectroscopy.
