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 - Funding Information:
We thank project PMI-UAB 1301 of Universidad Andrés Bello for the financial support of this study and to the Iniciativa Científica Milenio (ICM) del Ministerio de Economía , Fomento y Turismo del Gobierno de Chile . G. del C Pizarro acknowledges to VRAC grant number L216-03 of the Universidad Tecnológica Metropolitana (UTEM). JS to Basal project USA 1555-Vridei 021741SP_PUBLIC Universidad de Santiago de Chile. OELP and MLT thank the financial support from the Consejo Nacional de Investigaciones Científicas y Técnicas of Argentina (CONICET) and the Secretaría de Ciencia y Tecnología (SECYT-UNC). Raman facilities at LANN, INFIQC-UNC/CONICET, Sistema Nacional de Microscopía - MINCyT, and FESEM microscopy facilities at LAMARX, FAMAF-UNC/CONICET, Sistema Nacional de Microscopía - MINCyT, are gratefully acknowledged.
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 - http://www.scopus.com/inward/record.url?scp=85034440310&partnerID=8YFLogxK
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 -