Table 1. Photocatalytic water splitting over AgTaO3 loaded with various cocatalysts under UV irradiation a .
| Cocatalyst (wt%) | Loading method | Activity/μmol h–1 |
|
| H2 | O2 | ||
| None | — | 0.5 | 0 |
| Rh0.5Cr1.5O3 (0.05) | Impregnation (623 K – 1 h) | 56 | 28 |
| Rh0.5Cr1.5O3 (0.1) | Impregnation (623 K – 1 h) | 318 | 162 |
| Rh0.5Cr1.5O3 (0.2) | Impregnation (623 K – 1 h) | 400 | 192 |
| Rh0.5Cr1.5O3 (0.3) | Impregnation (623 K – 1 h) | 217 | 111 |
| Cr2O3 (0.13) | Impregnation (623 K – 1 h) | 1.8 | 0.9 |
| RuO2 (0.2) | Impregnation (673 K – 2 h) | 1.6 | 0.5 |
| NiO (0.2) | Impregnation (543 K – 1 h) | 18 | 4 |
| Pt (0.2) | Photodeposition (in situ) | 45 | 4 |
aPhotocatalyst: 0.3 g, reactant solution: distilled water (120 mL), cell: top-irradiation cell with a Pyrex window, light source: 300 W Xe-arc lamp (λ > 300 nm).