RT info:eu-repo/semantics/article
T1 Spectroelectrochemical behavior of polycrystalline gold electrode modified by reverse micelles.
A1 Souto, Ricardo Manuel
A1 Rodríguez González, Miriam C.
A1 Luis Sunga, Maximina
A1 Hernández Creus, Alberto
A1 Pastor Tejera, Elena María
A1 García, Gonzalo
A2 Química
A2 Grupo de Electroquímica y Corrosión
Instituto de Materiales y Nanotecnología
K1 gold
K1 surfactant
K1 micelles
K1 AFM
K1 EIS
K1 electron tunneling
K1 adsorption
AB The increasing demand for raising the reliability of electronic contacts has led to thedevelopment of methods that protect metal surfaces against atmospheric corrosion agents. This severeproblem implies an important economic cost annually but small amounts of corrosion inhibitors cancontrol, decrease or avoid reactions between a metal and its environment. In this regard, surfactantinhibitors have displayed many advantages such as low price, easy fabrication, low toxicity andhigh inhibition efficiency. For this reason, in this article, the spectroelectrochemical behavior ofpolycrystalline gold electrode modified by reverse micelles (water/polyethyleneglycol-dodecylether(BRIJ 30)/n-heptane) is investigated by atomic force microscopy (AFM), potentiodynamic methodsand electrochemical impedance spectroscopy (EIS). Main results indicate a strong adsorption of amonolayer of micelles on the gold substrate in which electron tunneling conduction is still possible.Therefore, this method of increasing the corrosion resistance of gold contacts is usable only inconditions of long-term storage but not in the operation of devices with such contacts. In this regard,the micelle coating must be removed from the surface of the gold contacts before use. Finally, the aimof the present work is to understand the reactions occurring at the surfactant/metal interface, whichmay help to improve the fabrication of novel electrodes.
YR 2021
FD 2021
LK http://riull.ull.es/xmlui/handle/915/22174
UL http://riull.ull.es/xmlui/handle/915/22174
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 27-dic-2024