Review Article
Heterogeneous Photo-Fenton Reaction Catalyzed by Nanosized Iron Oxides for Water Treatment
Table 1
Varieties of Fenton reactions.
| | Reagents | pH | Iron loss | Light |
| Classic Fenton | H2O2, Fe2+ | 2–4 | Yes | No | Fenton-like | H2O2, Fe3+ | 2–4 | Yes | No | Photo-Fenton | H2O2, iron complex, free iron ions | Acidic to neutral | Yes | Yes | Heterogeneous Fenton | H2O2, solid iron oxide | Wide range | No | No | Electro-Fenton | Electrogenerated H2O2, free iron ions; H2O2, electrogenerated Fe2+ | 2–4 | Yes | | Heterogeneous photo-Fenton | H2O2, solid iron oxide | Wide range | No | Yes | Heterogeneous photoelectro-Fenton | Electrogenerated H2O2, solid iron oxide | Wide range | No | Yes |
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