Table 2.
Overall water splitting using Ru/SrTiO3:Rh as HEP with various OEPs in [Co(bpy)3]3+/2+ and [Co(phen)3]3+/2+ systems. Adapted with permission.54 Copyright 2013, American Chemical Society
| Entry a) | OEPs | Starting reactant solution | Activity [µmol h−1] | |
|---|---|---|---|---|
| H2 | O2 | |||
| 1 | WO3 | [Co(bpy)3]SO4 | 14 | 0.5 |
| 2 | WO3 | [Co(phen)3]Cl2 | 15 | 0.4 |
| 3 | TiO2:Cr,Sb | [Co(bpy)3]SO4 | 3.0 | 0.8 |
| 4 | TiO2:Cr,Sb | [Co(phen)3]Cl2 | 1.3 | 0.7 |
| 5 | BiVO4 | [Co(bpy)3]SO4 | 10 | 4.8 |
| 6 | BiVO4 | [Co(phen)3]Cl2 | 7.9 | 3.5 |
| 7 | BiVO4 | CoSO4 | 1.0 | 0.2 |
| 8 | BiVO4 | 2,2′‐bipyridine | 3.2 | 0.6 |
| 9 | BiVO4 | 1,10‐phenanthroline | 5.5 | 0.5 |
a)
Reaction conditions: catalyst, 0.1 g; starting reacting solution, 120 mL aqueous solution of [Co(bpy)3]SO4 or [Co(phen)3]Cl2 with 0.5 mmol L−1 (pH = 7). Top irradiated cell with Xe‐arc lamp.