Characterization of PVC-Tetraruthenated Metalloporphyrins Modified Electrodes: Application as Electrocatalyst in the Nitrite Reduction |
| |
| Authors: | Karla Calfumán Paulina Dreyse Camilo García Maria J. Aguirre Tomás Beltrán Eva Guillamón Iván Sorribes Cristian Vicent Rosa Llusar Mauricio Isaacs |
| |
| Affiliation: | 1. Facultad de Ciencias, Departamento de Química, Universidad de Chile. Las Palmeras #3425, casilla 653, Ñuñoa, Santiago, Chile;2. Facultad de Química y Biología, Departamento de Química de los Materiales, Universidad de Santiago de Chile. Casilla 40- Correo 33. Santiago Chile;3. Departamento de Química Física y Analítica, Universidad de Jaume I, Avda. Sos Baynat s/n, E-12071, Castellón, España |
| |
| Abstract: | Summary: This paper describes the electrochemical reduction of nitrite ion in 0.1 M NaClO4, on glassy carbon or ITO electrodes modified with mixtures PVC- tetraruthenated metalloporphyrins. This electrode is able to keep the extraordinary electrocatalytic properties of the macrocycle allowing multielectronic transfers and a great stability as a consequence of the inclusion of the macrocycles into a polymeric support such as PVC. On the other hand, the electrochemical reduction of nitrite ion on these modified electrodes studied by cyclic voltammetry shows an enhancement in the current values and lower overpotential compared with the activity of the bare glassy carbon electrode. Controlled potential electrolysis experiments verify the production of ammonia, hydrazine and hydroxylamine, showing the electrocatalytic character and the stability of this modified electrode. |
| |
| Keywords: | electrocatalysis modified electrodes nitrite PVC tetraruthenated porphyrins |
|
|
