Table 1.
Lattice parameters, crystallite size, phase assignment, and relative abundance of the P25 and hydrothermally-synthesized samples.
| Sample | Lattice Parameters (Å) | Crystallite Size (nm) | Phase Assignment/Abundance (wt %) | ||
|---|---|---|---|---|---|
| a | b | c | |||
| P25 | 3.7891 | - | 9.5165 | 32.8 | Anatase (83.1) |
| 4.5977 | - | 2.9598 | 71.0 | Rutile (16.9) | |
| P25-1% Fe–N | 3.7876 | - | 9.5139 | 28.6 | Anatase (83.0) |
| 4.5942 | - | 2.9632 | 36.4 | Rutile (17.0) | |
| TiO2-1% Fe–N (pH ~5.5) | 3.7907 | - | 9.4743 | 10.4 | Anatase (79.4) |
| 9.1629 | 5.4437 | 5.1809 | 11.6 | Brookite (20.6) | |
| TiO2-1% Fe–N (pH ~8.5) | 3.7912 | - | 9.4909 | 12.3 | Anatase (85.3) |
| 9.1429 | 5.4215 | 5.2450 | 8.5 | Brookite (14.7) | |
| Errors | ±0.0005 | ±0.0005 | ±0.0005 | ±1.5 | ±1.4 |