Table 1. Composition of Crystal Phases in Double-Heterojunction Photocatalystsa.
| crystal phase | 10% WO3 | 20% WO3 | 30% WO3 |
|---|---|---|---|
| TiO2 rutile | 45.6 (223 nm) | 10.1 | 8.1 |
| TiO2 anatase | 48.6 (45 nm) | 81.7 (39 nm) | 76.7 (38 nm) |
| WO3 monoclinic | 5.8 | 8.2 | 15.2 |
The numbers in parentheses indicate the crystallite size.