Table 1. Photocatalytic Water Splitting over the WOx Catalysts (Runs 3 to 7, and 10: 10 mg of HEP and 5 mg of OEP, runs 8, 9, and 11: 5 mg of HEP and 5 mg of OEP) Suspended in an Aqueous Solution Performed under Different Experimental Conditions.
run | HEP | OEP | mediator | pH | weight ratio | HER (μmol h–1) | OER (μmol h–1) |
---|---|---|---|---|---|---|---|
1 | 3%Pt-Na0.56WO3–x | - | NaI | 7.0 | - | 16.8 | - |
2 | - | 0.5%Pt-WO3 | NaIO3 | 8.5 | - | - | 17.9 |
3 | 3%Pt-Na0.56WO3–x | 0.5%Pt-WO3 | NaIO3 | 7.0 | 2:1 | - | 11.3 |
4 | 3%Pt-Na0.56WO3–x | 0.5%Pt-WO3 | NaI | 3.0 | 2:1 | 3.0 | - |
5 | 3%Pt-Na0.56WO3–x | 0.5%Pt-WO3 | FeCl2 | 3.0 | 2:1 | 2.8 | - |
6 | 3%Pt-Na0.56WO3–x | 0.5%Pt-WO3 | NaI | 7.0 | 2:1 | 14.6 | 4.8 |
7 | 3%Pt-Na0.56WO3–x | 0.5%Pt-WO3 | NaI | 8.5 | 2:1 | 13.9 | 5.3 |
8 | 3%Pt-Na0.56WO3–x | 0.5%Pt-WO3 | NaI | 7.0 | 1:1 | 14.0 | 6.9 |
9 | 3%Pt-Na0.56WO3–x | 0.5%Pt-WO3 | NaI | 10.5 | 1:1 | 10.7 | 7.9 |
10 | 3%Pt-Na0.56WO3–x | 0.5%Pt-WO3 | NaI | 10.5 | 2:1 | 9.6 | 4.9 |
11 | 3%Pt-Na0.56WO3–x | 0.5%Pt-WO3 | - | 7.0 | 1:1 | - | - |