Cyanide and phenol oxidation on nanostructured Co3O4 electrodes prepared by different methods

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Title: Cyanide and phenol oxidation on nanostructured Co3O4 electrodes prepared by different methods
Authors: Berenguer Betrián, Raúl | Valdés-Solís Iglesias, Teresa | Fuertes Arias, Antonio Benito | Quijada Tomás, César | Morallon, Emilia
Research Group/s: Electrocatálisis y Electroquímica de Polímeros
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales | Instituto Nacional del Carbón (España) | Universidad Politécnica de Valencia. Departamento de Ingeniería Textil y Papelera
Keywords: Nanostructured electrodes | Cyanide oxidation | Phenol oxidation
Knowledge Area: Química Física
Date Created: 4-Mar-2008
Issue Date: 9-May-2008
Publisher: The Electrochemical Society
Citation: BERENGUER BETRIÁN, Raúl, et al. "Cyanide and phenol oxidation on nanostructured Co3O4 electrodes prepared by different methods". Journal of the Electrochemical Society. Vol. 155, Issue 7 (2008). ISSN 0013-4651, pp. K110-K115
Abstract: Nanostructured cobalt oxide (Co3O4) electrodes were prepared by two different methods. The first one involved the synthesis of Co3O4 nanoparticles through a nanocasting route using commercial silica gel as a sacrificial template, and in the second one, the Co3O4 electrodes were prepared by thermal decomposition. The electrodes were characterized by different techniques, such as scanning electron microscopy, energy-dispersive X-ray analysis (EDX), X-ray diffraction (XRD), transmission electron microscopy, X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry. EDX, XRD, and XPS show a characteristic spinel-type structure and a similar chemical composition for the two nanostructured cobalt oxides. However, the surface morphology is different. The electrochemical oxidation of cyanide and phenol in alkaline medium were used as test reactions. The electrocatalytic activity of the nanocrystalline Co3O4 electrodes for cyanide and phenol oxidation turned out to be highly dependent on the electrode preparation method.
Sponsor: Financial support by the Generalitat Valenciana grant no. GV05/136, no. GV06/106, and no. RED ARVIV/2007/076) and Ministerio de Educación y Ciencia (MAT2007-60621 and MAT2005-00262) projects.
ISSN: 0013-4651
DOI: 10.1149/1.2917210
Language: eng
Type: info:eu-repo/semantics/article
Rights: © The Electrochemical Society, Inc. 2008. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in J. Electrochem. Soc., Volume 155, Issue 7, pp. K110-K115 (2008).
Peer Review: si
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