Table 1
Experimental conditions of synthesizing samples A1 to A6 and B1 to B6.
| t [min] → | 30 | 60 | 90 | 120 | 150 | 180 | 210 | 240 |
|---|---|---|---|---|---|---|---|---|
| T [°C] ↓ | ||||||||
| 70 | A1 | A2 | A3(S) | – | A4 | A5 | A6 | – |
| 90 | B1 | B2 | B3 | B4 | B5 | – | – | B6 |
Fig. 1
(a) XRD pattern and (b) TEM image of sample S.
Fig. 2
UV-Vis spectrum of sample S.
Fig. 3
PL patterns of samples synthesized at (a) 70 °C and (b) 90 °C. The excitation wavelength is 320 nm.
Fig. 4
The PL intensity of the samples synthesized at 70 °C and 90 °C versus the reaction time.
Fig. 5
The f(t)−ln(t) diagrams for the oxygen absorption process at (a) 70 °C and (b) 90 °C.
Fig. 6
The ln[–ln(1 – f(t))]– ln(t) diagrams for the oxygen adsorption process at (a) 70 °C and (b) 90 °C.