Table 1 Calcination parameters and the resulted crystalline phases of the TiO2 nanoparticles
Samples | Calcination parameters | Crystalline phases | ||
|---|---|---|---|---|
Temperature (°C) | Ammonia gas flow rate (L/min) | Time (min) | ||
Pure | - | - | - | Anatase |
N-550-1 | 550 | 3.5 | 20 | Anatase |
N-550-2 | 550 | 7 | 10 | Anatase |
N-600-1 | 600 | 3.5 | 20 | Rutile and anatase |