Table 1.
Synthesis conditions of titanium dioxide samples and their properties.
| Samples | Hydrolysis conditions | Textural and structural-dispersion properties of TiO2 | |||||
|---|---|---|---|---|---|---|---|
| T, °C | pH | S BET, m2·g−1 | V pore, cm3·g−1 | Phase composition | Crystallite size, nm | D, nm (SAXS) | |
| 1.1 | 4 | 3-4 | 330 | 0.2 | Anatase | 5.4 | 5.8 |
| 1.2 | 4 | 6-7 | 360 | 0.6 | X-ray amorphous | — | 7.0 |
| 1.3 | 4 | 9-10 | 420 (400)a | 0.5 | X-ray amorphous | — | 5.0 |
| 1.4 | 20 | 3-4 | 350 (330)a | 0.3 | Anatase | 5.4 | 5.2 |
| 1.5 | 20 | 6-7 | 400 | 0.5 | X-ray amorphous | — | 5.0 |
| 1.6 | 20 | 9-10 | 495 | 0.4 | X-ray amorphous | — | 5.3 |
| 1.7 | 70 | 3-4 | 380 | 0.6 | Anatase | 4.3 | 6.1 |
| 1.8 | 70 | 6-7 | 510 | 0.5 | X-ray amorphous | — | 5.6 |
| 1.9 | 70 | 9-10 | 525 | 0.4 | X-ray amorphous | — | 5.4 |
| 2.1 | 4 | 0.2 | 70 (850)a | 0.05 | Brookite (the main phase) | 2.3 | 2.2 |
| 2.2 | 70/1 h | 0.2 | 100 | 0.1 | Brookite + anatase | 2.8 | 3.1 |
| 2.3 | 70/5 h | 0.2 | 175 (200)a | 0.17 | Rutile | 7.0 | 7.0 |
| 3.1 | 20 | 1.2 | 2 | 0.01 | Anatase | 3.0 | 3.0 |
| 3.2 | 50 | 1.2 | 60 | 0.04 | Anatase | 4.2 | 4.5 |
| 3.3 | 70 | 1.2 | 185 (300)a | 0.10 | Anatase | 4.7 | 5.2 |
| 3.4 | 95 | 1.2 | 230 | 0.13 | Anatase | 5.4 | 5.8 |
| 3.5 | 60 | 1.2 | 1.8 (530)a | 0.01 | Anatase | 3.3 | 2.8 |
aSSAXS.