How can Fenton reaction of CeO2 nanocatalyst for MB dye degradation explained through redox potential?
Fenton is considered to be one of the most effective advanced treatment processes in the removal of many hazardous organic pollutants from refractory/toxic wastewater. Due to less bandgap of CeO2 (2.6 to 3 eV), it has promising photocatalytic applications. However, the semiconductor illuminates with light, the electrons jumped into CB from VB and leads to formations of radicals which plays a key role in photocatalysis. However, if the iron oxide, the Fe (II) is oxidized by H2O2 to Fe(II), (is commonly a Fenton process), and generates the radicals.
Before to discuss.please, define what is the Fenton reaction? For reference, see
Article The centennial of the Fenton reaction
Fenton like reactions are very important for dye degradation. Hydrogen peroxide when combines with the electrons of the catalyst, it forms superoxide radical. This superoxide radical, along with holes and electrons help to degrade the organic pollutants.
For full mechanism of fenton like process and advanced oxidation process, check my review articles on Article Photocatalytic performance of g-C3N4 based nanocomposites fo...
Article Cerium Oxide and its Nanocomposites: Structure, Synthesis, a...
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