Table 1. Binding Energy and Assignment of the C Element in XPS.
| binding energy (eV) | attributable groups |
|---|---|
| 284.6, 285.6 | C–C, C=C |
| 286.9–286.2 | C–O |
| 288.4–287.7 | C=O |
| 289.7–289.0 | O=C–O |
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