Electrocatalytic oxidation of oxalic and oxamic acids in aqueous media at carbon nanotube modified electrodes

• Type: Article in International Scientific Journal
• Date: 2012

Authors

M. Ferreira (Author) Other; M.F. Pinto (Author) Other; O.S.G.P. Soares (Author) FEUP; M.F.R. Pereira (Author) FEUP; J.J. Melo Orfão (Author) FEUP; J.L. Figueiredo (Author) FEUP; I.C. Neves (Author) Other; A.M. Fonseca (Author) Other; P. Parpot (Author) Other

Journal

Title: Electrochimica Acta

Vol. 60

Pages: 278-286

ISSN: 0013-4686

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 13 Citations

ISI Web of Science

Scopus - 17 Citations

Scientific classification

FOS: Engineering and technology > Chemical engineering

Other information

Authenticus ID: P-002-DWR

DOI: 10.1016/j.electacta.2011.11.046

Abstract (EN): The electrochemical oxidation of oxalic and oxamic acids on multiwalled carbon nanotubes (CNT) and on monometallic (Pd and Pt) and bimetallic (Pd-Cu, Pt-Cu) catalysts supported on multiwalled carbon nanotubes was investigated using cyclic voltammetry. The electrodes were prepared by dispersion of the catalytic material on Toray carbon (CT) using a Nafion/water solution. The kinetic parameters of the reactions were determined using cyclic voltammetry. Modification of Toray carbon electrode with carbon nanotubes enables the oxidation of oxalic and oxamic acids in the solvent stability region. The highest oxidation current densities were observed for the Pt-Cu/CNT/CT electrode in 0.1 M NaCl. The oxidation potentials for both oxalic and oxamic acids in this case were lower than those observed with the CNT/CT electrode. The prepared electrocatalysts show good mechanical and chemical stability.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9