The electrochemical reduction of oxygen on polycrystalline copper in borax buffer
1994; Elsevier BV; Volume: 374; Issue: 1-2 Linguagem: Inglês
10.1016/0022-0728(94)03343-9
ISSN1873-2569
AutoresM. Vázquez, S.R. de Sánchez, Ernesto J. Calvo, David J. Schiffrin,
Tópico(s)Semiconductor materials and devices
ResumoOxygen reduction proceeds on copper electrodes in boric + borate buffer by the four electron pathway. Difference reflectance spectroscope shows that surface oxide species are formed during oxygen reduction on pre-reduced copper. The redox couple Cu2O/CuO plays an important role in the reduction sequence and a CE mechanism is proposed, although direct electron transfer to the oxygen molecule from oxide-free surfaces appears possible. In this case, the behaviour of copper is similar to that of the isoelectronic metal gold.
Referência(s)