Table 2.
Summarized assignment of FTIR spectra displayed in Figure 7. The water molecules might be formed during the ACBMPs fabrication process at 400 °C for 60 min as the consequence of NaOH and H3PO4 reactions of activation process performed.
| No. | FTIR spectra wave number/cm−1 | Atomic bonds vibration | References |
|---|---|---|---|
| 1. | 3600 (narrow) | Nonbonded hydrogen group, OH stretching | Coates (2019) |
| 2. | 2900 | Methyne (=CH-) C–H stretching | Coates (2019) |
| Methylene (=CH2) C–H stretching | Coates (2019), Silverstein et al. (1981) | ||
| 3. | 2100–1500 | Alkenyl C=C stretching | Coates (2019) |
| 4. | 1200–800 | Skeletal C–C stretching | Coates (2019), Silverstein et al. (1981) |
| 5. | 970–960 | trans C–H out-of-plane bend | Coates (2019) |
| 6. | 700 (broad) | cis C–H out-of-plane bend | Coates (2019) |