TY - JOUR
T1 - Nanostructuring of anodic copper oxides in fluoride-containing ethylene glycol media
AU - Oyarzún Jerez, Diego P.
AU - López Teijelo, Manuel
AU - Ramos Cervantes, Wilkendry
AU - Linarez Pérez, Omar E.
AU - Sánchez, Julio
AU - Pizarro, Guadalupe del C.
AU - Acosta, Gabriela
AU - Flores, Marcos
AU - Arratia-Perez, Ramiro
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/12/15
Y1 - 2017/12/15
N2 - We demonstrate that the anodization of copper in alkaline water/ethylene glycol media containing fluoride ions generates nanostructured copper oxide films. By modifying the anodization conditions (fluoride and OH– concentrations, applied voltage and anodization time), nanofibrillar Cu2O as well as highly rough nanofibrillar network or nanoporous mixed Cu2O/CuO films are obtained. Raman and X-ray Photoemission Spectroscopy (XPS) results indicate that in fluoride presence, Cu(I) oxide is obtained when anodization takes place applying low voltages at a relatively low OH– concentration. In comparison, the subsequent oxidation to obtain Cu(II) species (CuO and Cu(OH)2) is promoted by increasing the OH– contents. According to the present results, an oxidation reaction scheme is proposed in order to gain a deeper understanding in the preparation of controlled nanostructured copper oxide films.
AB - We demonstrate that the anodization of copper in alkaline water/ethylene glycol media containing fluoride ions generates nanostructured copper oxide films. By modifying the anodization conditions (fluoride and OH– concentrations, applied voltage and anodization time), nanofibrillar Cu2O as well as highly rough nanofibrillar network or nanoporous mixed Cu2O/CuO films are obtained. Raman and X-ray Photoemission Spectroscopy (XPS) results indicate that in fluoride presence, Cu(I) oxide is obtained when anodization takes place applying low voltages at a relatively low OH– concentration. In comparison, the subsequent oxidation to obtain Cu(II) species (CuO and Cu(OH)2) is promoted by increasing the OH– contents. According to the present results, an oxidation reaction scheme is proposed in order to gain a deeper understanding in the preparation of controlled nanostructured copper oxide films.
KW - Copper oxides
KW - Nanostructured oxides
KW - Raman
KW - XPS
UR - https://www.scopus.com/pages/publications/85034440310
U2 - 10.1016/j.jelechem.2017.11.047
DO - 10.1016/j.jelechem.2017.11.047
M3 - Article
AN - SCOPUS:85034440310
SN - 1572-6657
VL - 807
SP - 181
EP - 186
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
ER -