| As-prepared powder | lattice O2− | Hydroxyl group on surface | ||
| B.E. (eV) | Fraction (%) | B.E. (eV) | Fraction (%) | |
| 0.5Ag/TiO2 | 530.3 | 71.72 | 532.1 | 28.28 |
| 1Ag/TiO2 | 530.3 | 69.87 | 532.1 | 30.13 |
| 1.5Ag/TiO2 | 530.3 | 74.97 | 532.1 | 25.03 |
| 2Ag/TiO2 | 530.5 | 54.45 | 531.9 | 45.55 |