Electrochemical oxidation of water on synthetic boron-doped diamond thin film anodes

Michaud, P-A.; Panizza, M.; Ouattara, L.; Diaco, T.; Foti, G.; Comninellis, Ch.
February 2003
Journal of Applied Electrochemistry;Feb2003, Vol. 33 Issue 2, p151
Academic Journal
Electrolysis in aqueous 1 M HClO4 and 1 M H2SO4 solutions has been carried out under galvanostatic conditions using boron-doped diamond electrodes (BDD). Analyses of the oxidation products have shown that in 1 M HClO4 the main reaction is oxygen evolution, while in H2SO4 the main reaction is the formation of H2S2O8, in both electrolytes small amounts of O3 and H2O2 are formed. Finally, a simplified mechanism involving hydroxyl radicals formed by water discharge has been proposed for water oxidation on boron-doped diamond anodes.


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