Table 3.
The results of the IR simulations compared to published experimental results
| Wave number | Simulation | Ref [34] | Ref [35] |
|---|---|---|---|
| 900 | C–C vibration out of bending | ||
| Bands around 1000 | C–C vibration out of bending | C–C vibrations | |
| 1100 | C–C stretching and C–O bonds | C–O vibrations of the epoxy groups | Presence of νC–O bond |
| 1220–1400 | Attributed to the C=C stretching among the graphene C network | C–OH stretching, the C=C stretching | |
| 1478–1560 | Conversion of the carbonyl group from C=C–C=O into transient structure C+–C=C–O+ | Peaks around 1478 due to the increase of O−C=O vibrations during the conversion of carbonyl group. | |
| 1630 | Attributed to aromatic carbon double bonds | C=C bonds | |
| 1730 | Complete transformation of the carbonyl group into C+–C=C–O+ | Corresponding to the C=O stretching vibrations from carbonyl and carboxylic groups | Vibrations at 1700 indicating C=O bonds |