Copper electrodeposition on glassy carbon and highly oriented pyrolytic graphite substrates from perchlorate solutions
AUTOR(ES)
García-Rodríguez, Diana Elizabeth, Mendoza-Huizar, Luis Humberto, Rios-Reyes, Clara Hilda, Alatorre-Ordaz, Martín Alejandro
FONTE
Química Nova
DATA DE PUBLICAÇÃO
2012
RESUMO
In present work, we analyzed the copper electrodeposition onto GCE (System I) and HOPGE (System II) from perchlorate solutions. The current density transients obtained from system I and II were well described through a kinetic mechanism that involves four different contributions: (a) a Langmuir type adsorption process, b) an electron transfer from Cu2+→Cu+, (c) a 3D nucleation limited by a mass transfer reaction and (d) a proton reduction process. It was observed that the values of the nucleation rate, the number of active nucleation sites were increased with the overpotential and they are bigger onto GCE in comparison with HOPGE.
Documentos Relacionados
- Cobalt electrodeposition onto highly oriented pyrolytic graphite (HOPG) electrode from ammonium sulfate solutions
- Kinetic study of the cobalt electrodeposition onto glassy carbon electrode from ammonium sulfate solutions
- Mesoscopic self-organization of a self-assembled supramolecular rectangle on highly oriented pyrolytic graphite and Au(111) surfaces
- Electrodeposition of nickel plates on copper substrates using PC y PRC
- Removal of Cd2+ ion from diluted aqueous solutions by electrodeposition on reticulated vitreous carbon electrodes