Table 2 Surface Elemental Composition of the Samples From XPS Analysis
Sample | Elemental Surface Composition (XPS) | ||||
|---|---|---|---|---|---|
Total Ti 2p Species | O 1 s (eV) | ||||
O-Ti4+ (528.4) | Ti-OH (529.3) | Ti-OH (531.3) | Total | ||
TiO2-nit TiO2-sul TiO2-ace | 56.3 57.8 57.2 | 33.0 31.8 34.0 | 9.5 9.4 8.4 | 1.2 1.0 0.4 | 43.7 41.7 42.8 |