Collect. Czech. Chem. Commun. 2003, 68, 1723-1735

Preparation and Characterization of Electrodes Modified with Metalloporphyrins. Application to Reduction of Nitrite

Francisco Armijoa, Ejnar Trollunda, Matías Reinab, M. Carmen Arévaloc,* and M. Jesús Aguirrea,*

a Departamento de Química de los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, correo 33, Santiago, Chile
b Instituto de Productos Naturales y Agrobiología del CSIC, La Laguna, Tenerife, Spain
c Departamento de Química Fisica, Universidad de La Laguna, La Laguna, Tenerife, Spain


Six type-modified electrodes by electropolymerization of tetrakis(x-aminophenyl)porphyrins, where x = 2, 3 or 4, and their Cu(II) and Ni(II) complexes in HCl solution were prepared and characterized by cyclic voltammetry, atomic force microscopy and UV-VIS spectroscopy. The morphology of the polymers depends on the position of the amino groups. The modified electrodes show interesting electrocatalytic activity toward reduction of nitrites. The catalytic behavior strongly depends on the nature of the metal and the position of the amino groups.

Keywords: Modified electrodes; Electropolymerization; Tetraaminophenylporphyrins; Nitrite reduction; Porphyrins; Copper complexes; Nickel; Cyclic voltammetry; Electrochemistry.

References: 13 live references.