Marine biofouling severely limits the event of the marine financial system, the reactive oxygen species (ROS) produced by electrocatalytic antifouling methods may inactivate marine microorganism and inhibit the formation of marine biofouling. In contrast with electro-Fenton progress, three-electron oxygen discount response (3e- ORR) may generate hydroxyl radical (·OH) in situ with out the limitation of pH and iron mud pollution. Herein, Ov-rich γ-MnO2 was designed to reinforce 3e- ORR efficiency in impartial media and exhibit wonderful sterilization efficiency for typical marine micro organism. DFT calculation reveals that Ov is helpful to the “end-on” adsorption and activation of O2, and the Mn website may settle for the electrons from *OOH and promote its additional discount to type ·OH, Ov and Mn websites collectively assure the excessive 3e- ORR effectivity. As well as, liquid chromatography-tandem mass spectrometry (LC-MS/MS) proves the huge formation of ·OH within the main response stage, which is the important thing to sterilization. This work explores the response mechanism of 3e- ORR in impartial media and offers the chance for the applying of electrocatalysis know-how within the therapy of marine biofouling air pollution.
