Table 2.
FT-IR analysis of the starting TiO2 powder, TiO2 nanoribbons, and TiO2 NRs/CNTs composite.
| Anatase | TiO2 NRs | TiO2 NRs/CNTs | Assignment |
|---|---|---|---|
| ----------------- | Above 3500 cm−1 | Above 350 cm−1 | Surface O-H groups and adsorbed water36 |
| ----------------- | ---------------- | 2978.3 cm−1 | aliphatic asymmetrical –CH2 stretching37 |
| ----------------- | ---------------- | 2878.7 cm−1 | Aliphatic symmetrical–CH2 stretching38 |
| 2332 cm−1 | 2324 cm−1 | 2352.3 cm−1 | O-H stretch from strongly hydrogen-bonded33 |
| ----------------- | ----------------- | 1607.8 cm−1 | C=C stretching bond, or a C=O bond39 |
| 1396.6 cm−1 1062.54 cm−1 and 1160.6 cm−1 | 1396.71 cm−1 1061.37 cm−1 and 1163.24 cm−1 | 1398.6 cm−1 1063.8 and 1156.78 cm−1 | OH bond of vibration of the surface adsorbed of Ti-OH19 Ti-O and Ti-O-Ti bonds19,33 |
| ---------------- | 886.83 cm−1 | 891.51 cm−1 | Ti-O and Ti-O-Ti of TiO2-B34 |
| 710 cm−1 --------------------------------- | ----------------- ----------------- 442.99 cm−1 | ---------------- 755 cm−1 440.59 cm−1 | Ti-O and Ti-O-Ti of anatase27 Ti-O-C functional group26 Ti-O and Ti-O-Ti of TiO2-B34 |