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Electrochemical characterization of dilithium phthalocyanine carbonaceous electrodes

Department of Inorganic Chemistry, Escuela de Ingenierías Industriales, University of Valladolid, Paseo del Cauce, 59, 47011 Valladolid, Spain

Department of Chemistry, Physics and Environment, Faculty of Sciences and Environment, "Dunarea de Jos", University of Galati, 47 Domneasca Street, 800008 Galati, Romania

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Cristina Medina-Plaza

Department of Inorganic Chemistry, Escuela de Ingenierías Industriales, University of Valladolid, Paseo del Cauce, 59, 47011 Valladolid, Spain

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José Antonio de Saja

Department of Condensed Matter Physics, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain

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, and

Maria Luz Rodriguez-Mendez

Department of Inorganic Chemistry, Escuela de Ingenierías Industriales, University of Valladolid, Paseo del Cauce, 59, 47011 Valladolid, Spain

Corresponding author, tel: +34 983-423540, fax: +34 983-423310.

SPP full member in good standing.

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https://doi.org/10.1142/S1088424613500430Cited by:5 (Source: Crossref)

Abstract

Carbonaceous electrodes of dilithium phthalocyanine were prepared using graphite, carbon microspheres and multiwall carbon nanotubes. The electrochemical behavior of the dilithium bisphthalocyanine electrodes was found to be dependent on the nature of the carbonaceous material and on the nature of the electrolytic solution. The electrocatalytic properties of the dilithium phthalocyanine electrodes for oxidation of ascorbic acid were evidenced by the enhancement of the oxidation peak current, (~10 fold compared to the bare carbon electrodes) and the decrease of the oxidation potential at which oxidation of ascorbic acid takes place. The combined use of multiwall carbon nanotubes and dilithium phthalocyanine produces a synergistic effect that improves the electrocatalytic effect towards ascorbic acid.

Dedicated to Professor Özer Bekaroğlu on the occasion of his 80th birthday

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