Ultrasound-assisted homogeneous photocatalytic degradation of Reactive Blue 4 in aqueous solution

- Mineralization of RB4 solution under sono-photo-Fenton process was studied.
- 94% TOC removal of the treated water was achieved in 60 min.
- The radical reaction is the main mineralization pathway.
- Fe(II) plays the most important role as a decomposition catalyst.
- Overall mineralization mechanism can be split into five individual steps.