SULFITE OXIDATION MEDIATED BY ORTHO-PHENYLENEDIAMINE / CO(II)-TETRAKIS(PARA-AMINOPHENYL)PORPHYRIN COPOLYMERS IN ACID MEDIUM

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 e...

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Autores principales:	ARCE,ROXANA, MÁRQUEZ,PAULINA, HERRERA,FRANCISCO, AGUIRRE,MARÍA J, ROMERO,JULIO
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2013
Materias:	conducting polymers modified electrodes electrocatalysis copolymers Co(II)-tetrakis(para-aminophenyl)porphyrin ortho-phenylenediamine oxidation of sulfite
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400016
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spelling	oai:scielo:S0717-970720130004000162014-09-02SULFITE OXIDATION MEDIATED BY ORTHO-PHENYLENEDIAMINE / CO(II)-TETRAKIS(PARA-AMINOPHENYL)PORPHYRIN COPOLYMERS IN ACID MEDIUMARCE,ROXANAMÁRQUEZ,PAULINAHERRERA,FRANCISCOAGUIRRE,MARÍA JROMERO,JULIO conducting polymers modified electrodes electrocatalysis copolymers Co(II)-tetrakis(para-aminophenyl)porphyrin ortho-phenylenediamine oxidation of sulfite 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.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.58 n.4 20132013-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400016en10.4067/S0717-97072013000400016
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	conducting polymers modified electrodes electrocatalysis copolymers Co(II)-tetrakis(para-aminophenyl)porphyrin ortho-phenylenediamine oxidation of sulfite
spellingShingle	conducting polymers modified electrodes electrocatalysis copolymers Co(II)-tetrakis(para-aminophenyl)porphyrin ortho-phenylenediamine oxidation of sulfite ARCE,ROXANA MÁRQUEZ,PAULINA HERRERA,FRANCISCO AGUIRRE,MARÍA J ROMERO,JULIO SULFITE OXIDATION MEDIATED BY ORTHO-PHENYLENEDIAMINE / CO(II)-TETRAKIS(PARA-AMINOPHENYL)PORPHYRIN COPOLYMERS IN ACID MEDIUM
description	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.
author	ARCE,ROXANA MÁRQUEZ,PAULINA HERRERA,FRANCISCO AGUIRRE,MARÍA J ROMERO,JULIO
author_facet	ARCE,ROXANA MÁRQUEZ,PAULINA HERRERA,FRANCISCO AGUIRRE,MARÍA J ROMERO,JULIO
author_sort	ARCE,ROXANA
title	SULFITE OXIDATION MEDIATED BY ORTHO-PHENYLENEDIAMINE / CO(II)-TETRAKIS(PARA-AMINOPHENYL)PORPHYRIN COPOLYMERS IN ACID MEDIUM
title_short	SULFITE OXIDATION MEDIATED BY ORTHO-PHENYLENEDIAMINE / CO(II)-TETRAKIS(PARA-AMINOPHENYL)PORPHYRIN COPOLYMERS IN ACID MEDIUM
title_full	SULFITE OXIDATION MEDIATED BY ORTHO-PHENYLENEDIAMINE / CO(II)-TETRAKIS(PARA-AMINOPHENYL)PORPHYRIN COPOLYMERS IN ACID MEDIUM
title_fullStr	SULFITE OXIDATION MEDIATED BY ORTHO-PHENYLENEDIAMINE / CO(II)-TETRAKIS(PARA-AMINOPHENYL)PORPHYRIN COPOLYMERS IN ACID MEDIUM
title_full_unstemmed	SULFITE OXIDATION MEDIATED BY ORTHO-PHENYLENEDIAMINE / CO(II)-TETRAKIS(PARA-AMINOPHENYL)PORPHYRIN COPOLYMERS IN ACID MEDIUM
title_sort	sulfite oxidation mediated by ortho-phenylenediamine / co(ii)-tetrakis(para-aminophenyl)porphyrin copolymers in acid medium
publisher	Sociedad Chilena de Química
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400016
work_keys_str_mv	AT arceroxana sulfiteoxidationmediatedbyorthophenylenediaminecoiitetrakisparaaminophenylporphyrincopolymersinacidmedium AT marquezpaulina sulfiteoxidationmediatedbyorthophenylenediaminecoiitetrakisparaaminophenylporphyrincopolymersinacidmedium AT herrerafrancisco sulfiteoxidationmediatedbyorthophenylenediaminecoiitetrakisparaaminophenylporphyrincopolymersinacidmedium AT aguirremariaj sulfiteoxidationmediatedbyorthophenylenediaminecoiitetrakisparaaminophenylporphyrincopolymersinacidmedium AT romerojulio sulfiteoxidationmediatedbyorthophenylenediaminecoiitetrakisparaaminophenylporphyrincopolymersinacidmedium
_version_	1718445499130839040

SULFITE OXIDATION MEDIATED BY ORTHO-PHENYLENEDIAMINE / CO(II)-TETRAKIS(PARA-AMINOPHENYL)PORPHYRIN COPOLYMERS IN ACID MEDIUM

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