Table 2.
Carbon content (MW%), fractional composition (MW%), O/Ti ratio, and bandgap energy of anatase and rutile phases in C/TiO2-δ nanocomposite samples heat-treated at different temperatures.
| Sample | Carbon |
Anatase |
Rutile |
||||
|---|---|---|---|---|---|---|---|
| Fraction % | Fraction % | O/Ti | Abs. Edge (eV) | Fraction % | O/Ti | Abs. Edge (eV) | |
| TD400 | 10.7 | 87.5 | 1.95 | 3.16 | x | x | x |
| TD425 | 6.71 | 89 | 1.9 | 3.15 | 4.52 | 1.95 | x |
| TD450 | 5.96 | 88.5 | 1.9 | 3.11 | 5.53 | 1.95 | x |
| TD475 | 5.21 | 75.11 | 1.9 | 3.07 | 19.68 | 1.9 | 2.93 |
| TD500 | 4.66 | 64.34 | 1.85 | 3.05 | 35.66 | 1.85 | 2.9 |
| TD525 | 4.05 | 40.82 | 1.75 | 2.82 | 55.13 | 1.8 | 2.7 |
| TD550 | 3.3 | 31.81 | 1.8 | 2.9 | 64.89 | 1.85 | 2.87 |
| TD575 | 2.35 | 16.85 | 1.85 | 2.9 | 80.8 | 1.9 | 2.9 |
| TD600 | 1.83 | 5.44 | 1.93 | x | 92.73 | 1.93 | 2.93 |
| TD625 | 1.45 | 1.15 | 1.95 | x | 97.4 | 1.95 | 2.94 |
| TD650 | 1.11 | 1.05 | 2 | x | 97.85 | 1.95 | 2.94 |
| TD700 | x | x | x | x | 100 | 2 | 3 |