Table 1 The comparison of *OH in FEP/CEC and •OH in FeIII/FEP/CEC
From: FeIII-driven self-cycled Fenton via contact-electro-catalysis for water purification
*OH | •OH | |
|---|---|---|
Meaning | Interfacial hydroxyl radical | Dissociative hydroxyl radical |
Precursor | H2O | H2O2 |
Generated pathways | H2O → H2O•+ + e– H2O•+ + H2O → H3O+ + *OH | FeII + H2O2 → FeIII + •OH + OH– |
Generated system | FEP/CEC | FeIII/FEP/CEC SC-Fenton |
Distribution | Mainly at the interface of FEP | Liquid solution |
Dominant role | Recombination into H2O2 *OH + *OH → H2O2 | Degradation pollutant |
