Photoelectrochemical properties of nanostructured copper oxides formed sonoelectrochemically
Author
dc.contributor.author
Grez, P.
Author
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Rojas, C.
Author
dc.contributor.author
Segura, I.
Author
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Heyser, C.
Author
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Ballesteros, L.
Author
dc.contributor.author
Celedon, C.
Author
dc.contributor.author
Schrebler, R.
Admission date
dc.date.accessioned
2018-06-25T20:02:39Z
Available date
dc.date.available
2018-06-25T20:02:39Z
Publication date
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2017
Cita de ítem
dc.identifier.citation
Int. J. Electrochem. Sci., 12 (2017): 7240 – 7248
es_ES
Identifier
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10.20964/2017.08.28
Identifier
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https://repositorio.uchile.cl/handle/2250/149198
Abstract
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In this work nanostrutured copper oxides (CuxO) were prepared by ultrasound-assisted anodization of copper foils. These CuxO nanostructures were characterized morphologically and structurally by SEM and XRD, respectively. The bandgap value was determined by diffuse reflectance measurements. The electrochemical characterization included Mott Schottky plots and electrochemical techniques. From these measurements it was possible to establish that the formed phase corresponded to p-Cu2O. The best results in the cathodic photocurrent response for the system Cu| p-Cu2O|10 mM KI, 1 mM KI3 in 50 mM Na2B4O7 (pH 9.2) were obtained with oxides prepared at 75 degrees C, 100V in ethylene glycol contained 5% wt H2O and 0.5 wt% NH4Cl.