Research Article
High Temperature Vacuum Annealing and Hydrogenation Modification of Exfoliated Graphite Nanoplatelets
Table 2
The C1s peak position and the relative atomic percentage of various functional groups, corresponding to the deconvoluted peaks in Figure
5.
| | Material | C1s subpeak binding energy (eV) (bond-allocated carbon concentration (atomic%)) | | 1 | 2 | 3 | 4 | 5 | 6 | | sp2 C | sp3 C | C–O/C–O–C | C=O | O–C=O | π-π* |
| | GNP | 284.68 (53.87) | 285.22 (32.75) | 286.18 (7.14) | 287.68 (2.01) | 289.18 (2.93) | 290.67 (1.30) | | GNP annealed, no exposure to air | 284.79 (69.44) | 285.95 (24.83) | 286.29 (0.81) | 287.79 (0.88) | 289.29 (0.98) | 290.83 (3.06) | | GNP annealed then exposed to air | 284.78 (59.23) | 285.45 (27.79) | 286.28 (7.25) | 287.78 (1.29) | 289.28 (2.76) | 290.53 (1.67) | | GNP-H | 284.74 (69.63) | 285.80 (24.51) | 286.24 (1.61) | 287.74 (1.05) | 289.24 (1.05) | 290.39 (2.16) |
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