Electro-Reduction of Molecular Oxygen Mediated by a Cobalt(II)octaethylporphyrin System onto Oxidized Glassy Carbon/Oxidized Graphene Substrate. - Canales, Camila; Gidi, Leyla; Arce, Roxana; Armijo, Francisco; Aguirre, María J.; Ramírez, Galo (Catalysts (2073-4344), 2018)