Table 3. Chemical compositions of GO and rGO derived from C 1 s spectra in XPS spectra (at.%).
| C-C 285.0 (eV) | C-O 286.5 (eV) | C = O 288.7 (eV) | |
|---|---|---|---|
| GO | 38.5 | 26.7 | 6.9 |
| rGO in N2 gas | 67.4 | 19.5 | 5.1 |
| rGO in liquid N2 | 75.3 | 12.3 | 3.6 |
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