Sulfite oxidation mediated by ortho-phenylenediamine / co(ii)- tetrakis(para-aminophenyl)porphyrin copolymers in acid medium

Roxana Arce, Paulina Márquez, Francisco Herrera, Maria J. Aguirre, Julio Romero

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

5 Citas (Scopus)

Resumen

ABSTRACT The aim of this work is to study the sulfite oxidation mediated by glassy carbon electrodes modified with copolymers formed by ortho-phenylenediamine (OPD) and Co(II)-tetrakis(para-aminophenyl)porphyrin (CoTAPP). The copolymer was obtained through continuous cycling of potential of a glassy carbon electrode in acid medium containing each respective homopolymer in 1:1 feeding volume, in which the ortho-phenylenediamine concentration was 110-1 M and the CoTAPP concentration was 110-4 M. The film obtained is thin, stable and contains a low amount of porphyrin in comparison to the amount in ortho-phenylenediamine. Its electrocatalytic activity was tested toward the sulfite oxidation. In this case, this film is more electrocatalytic than the modified electrode modified with the CoTAPP electropolymer, even though ortho-phenylenediamine is inactive in this reaction. In this work the electrocatalysis process, the morphology of the film, and the difference of electrocatalytic behavior between the ortho-phenylenediamine and cobalt porphyrin homopolymers and the ortho-phenylenediamine-porphyrin copolymer were studied. The morphologic studies were done using Au electrodes since the electrocatalytic activity on Au and on glassy carbon are quite similar.

Idioma originalInglés
Páginas (desde-hasta)1982-1985
Número de páginas4
PublicaciónJournal of the Chilean Chemical Society
Volumen58
N.º4
DOI
EstadoPublicada - 1 ene 2013

Áreas temáticas de ASJC Scopus

  • Química (todo)

Huella

Profundice en los temas de investigación de 'Sulfite oxidation mediated by ortho-phenylenediamine / co(ii)- tetrakis(para-aminophenyl)porphyrin copolymers in acid medium'. En conjunto forman una huella única.

Citar esto