The electronegativity, band gap, conduction band (CB) edge and valence band (VB) edge potential of the catalysts on a normalized hydrogen scale.
| Semiconductor catalyst | x (eV) | E g (eV) | E CB (eV) | E VB (eV) |
|---|---|---|---|---|
| Fe2O3 | 5.88 | 1.96 | −0.12 | 2.355 |
| Cu2O | 5.32 | 1.88 | 0.395 | 1.76 |