The mechanism of electrochemical water oxidation at transition metal oxide electrodes in aqueous base is described using the interlinked surfaquo group concept. The latter connect homogeneous and heterogeneous water oxidation catalysis.
Lyons, M. E. G., Doyle, R. L., Fernandez, D., Godwin, I. J., Browne, M. P., & Rovetta, A. (2014). The mechanism and kinetics of electrochemical water oxidation at oxidized metal and metal oxide electrodes. Part 2. The surfaquo group mechanism: A mini review. Electrochemistry Communications, 45, 56-59. https://doi.org/10.1016/j.elecom.2014.04.019