RT info:eu-repo/semantics/article
T1 Applicability of voltammetric modes in scanning electrochemical microscopy for in situ corrosion characterisation of copper-based materials
A1 Souto, Ricardo Manuel
A1 Hernández-Concepción, Brenda
A1 Méndez-Guerra, A.
A1 Izquierdo Pérez, Javier
A2 Química
A2 Grupo de Electroquímica y Corrosión. Instituto de Materiales y Nanotecnología.
K1 square-wave voltammetry
K1 cyclic voltammetry
K1 gold microelectrode
K1 anodic stripping
K1 copper corrosion
K1 scanning electrochemical microscopy
AB Chemical imaging of corrosion processes involving copper species using scanning electrochemical microscopy has been hampered by the lack of soluble oxidation states for copper thatcan be achieved by amperometric conversion at the tip. Indeed, the only possibility is to reduce thecorrosion products at the tip, thus modifying the chemical response of the electrode material andrequiring subsequent redissolution of the copper deposits. Consequently, the limitations arising fromthe system prevented a full-scale quantification, requiring the development of new methodologiesor the optimisation of those currently available, as we pursued with the present work. Therefore,the voltammetric behaviours of gold macro- and microelectrodes were evaluated with respect to thecollection and redissolution of Cu2+ ions, with the aim of using them as sensing probes in scanningelectrochemical microscopy (SECM) to investigate the activity of copper surfaces in acidic chloridecontaining environments. Cyclic and square-wave voltammetric techniques were explored for coppercollection and subsequent stripping on Au microelectrode tips in SECM with the objective to capturein situ image electrochemical reactivity distributions across copper surfaces undergoing corrosion.
YR 2023
FD 2023
LK http://riull.ull.es/xmlui/handle/915/34619
UL http://riull.ull.es/xmlui/handle/915/34619
LA es
NO Metals 13 (2023) 1965, 17 pp. https://doi.org/10.3390/met13121965
NO Proyecto PID2021-127445NB-I00
DS Repositorio institucional de la Universidad de La Laguna
RD 29-may-2024