Phase composition and crystallite sizes in TiO2 nanofibers after thermal processing at 500 and 750 °C.
| Yield TiO2/polymer ratio, mg mg−1 | 500 °C | 750 °C | ||||||
|---|---|---|---|---|---|---|---|---|
| Anatase | Rutile | Anatase | Rutile | |||||
| Size, nm | mol% | Size, nm | mol% | Size, nm | mol% | Size, nm | mol% | |
| ×0.5 | 22.9 | 97.5 | 18.6 | 2.5 | 34.5 | 5.1 | 41.1 | 94.9 |
| ×1.0 | 22.4 | 98.5 | — | 1.5 | 47.1 | 36.0 | 58.8 | 64.0 |
| ×1.5 | 25.9 | 99.5 | — | 0.5 | 42.6 | 64.2 | 53.4 | 35.8 |
| ×2.0 | 22.2 | 94.0 | 19.8 | 6.0 | 40.9 | 43.6 | 48.4 | 56.4 |
| ×2.5 | 29.7 | 99.9 | — | 0.1 | 44.5 | 84.1 | 65.4 | 15.9 |