Table 3.
Main peaks identified in the FTIR spectra of the obtained scaffolds.
| Frequency cm−1 | Chemical Bond | Assignment |
|---|---|---|
| 3335 | O–H | OH bond |
| 2973 | C–H | Saturation CH Groups |
| 2845 | C–H | Hydrocarbons |
| 1625 | C O | Amino acid flavonoid lipids |
| 1647 | C–O, COH | Lipid, tertiary alcohols |
| 1513 | H–O–H | Water |
| 1453 | CH, CH2 and CH3 | Flavonoids and aromatic rings |
| 1380 | CH | CH groups of flavonoids |
| 1269 | OH C–CO | Hydrocarbons |
| 1080 | C–C, C–OH | Flavonoids and secondary alcohol groups |
| 1043 | = C–O–C, C–C, C–OH | Primary alcohol groups |
| 1070–902 | O–Si–O | Silica |
| 881 | C–C–O- | Primary and secondary alcohol groups |
| 567–453 | SiO | SiO groups |
| 453 | CaO | CaO groups |