ELECTROCHEMICAL REDUCTION OF NITRITE AT POLYMERIC Co (II)-TETRA-3-AMINO-PHENYL-PORPHYRIN MODIFIED ELECTRODE

This paper describes the electrochemical reduction of nitrite ion in basic media 0.2M KHC0(3), with glassy carbon or ITO electrodes modified with a conducting polymer derived from Co(II)tetra-3-aminophenyl-porphyrin. Cyclic voltammetry results show an enhancement in the current of the corresponding...

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Autores principales:	SAN MARTÍN,CRISTIAN, DREYSE,PAULINA, GARCÍA,CAMILO, CALFUMÁN,KARLA, VILLAGRA,DIEGO, ISAACS,MAURICIO
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2007
Materias:	nitrite cobalt porphyrin conducting polymers electrocatalysis
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072007000400008
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spelling	oai:scielo:S0717-970720070004000082008-04-30ELECTROCHEMICAL REDUCTION OF NITRITE AT POLYMERIC Co (II)-TETRA-3-AMINO-PHENYL-PORPHYRIN MODIFIED ELECTRODESAN MARTÍN,CRISTIANDREYSE,PAULINAGARCÍA,CAMILOCALFUMÁN,KARLAVILLAGRA,DIEGOISAACS,MAURICIO nitrite cobalt porphyrin conducting polymers electrocatalysis This paper describes the electrochemical reduction of nitrite ion in basic media 0.2M KHC0(3), with glassy carbon or ITO electrodes modified with a conducting polymer derived from Co(II)tetra-3-aminophenyl-porphyrin. Cyclic voltammetry results show an enhancement in the current of the corresponding Co(II)/Co(I) redox couple when the solution contains 0.02M nitrite. When spectroelectrochemical experiments were performed in the support electrolyte, the modified electrode does not stabilize Co(I) oxidation state, but when there is nitrite in the solution a band at 549nm appears, indicating the stabilization of Co(I) oxidation state probably due to the formation of an intermediary complex between the Co(I) and nitrite. Controlled potential electrolysis experiments verify the production of ammonia and hydrazine even at very negative potentials, showing the electrocatalytic character and the stability of this modified electrodeinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.52 n.4 20072007-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072007000400008en10.4067/S0717-97072007000400008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	nitrite cobalt porphyrin conducting polymers electrocatalysis
spellingShingle	nitrite cobalt porphyrin conducting polymers electrocatalysis SAN MARTÍN,CRISTIAN DREYSE,PAULINA GARCÍA,CAMILO CALFUMÁN,KARLA VILLAGRA,DIEGO ISAACS,MAURICIO ELECTROCHEMICAL REDUCTION OF NITRITE AT POLYMERIC Co (II)-TETRA-3-AMINO-PHENYL-PORPHYRIN MODIFIED ELECTRODE
description	This paper describes the electrochemical reduction of nitrite ion in basic media 0.2M KHC0(3), with glassy carbon or ITO electrodes modified with a conducting polymer derived from Co(II)tetra-3-aminophenyl-porphyrin. Cyclic voltammetry results show an enhancement in the current of the corresponding Co(II)/Co(I) redox couple when the solution contains 0.02M nitrite. When spectroelectrochemical experiments were performed in the support electrolyte, the modified electrode does not stabilize Co(I) oxidation state, but when there is nitrite in the solution a band at 549nm appears, indicating the stabilization of Co(I) oxidation state probably due to the formation of an intermediary complex between the Co(I) and nitrite. Controlled potential electrolysis experiments verify the production of ammonia and hydrazine even at very negative potentials, showing the electrocatalytic character and the stability of this modified electrode
author	SAN MARTÍN,CRISTIAN DREYSE,PAULINA GARCÍA,CAMILO CALFUMÁN,KARLA VILLAGRA,DIEGO ISAACS,MAURICIO
author_facet	SAN MARTÍN,CRISTIAN DREYSE,PAULINA GARCÍA,CAMILO CALFUMÁN,KARLA VILLAGRA,DIEGO ISAACS,MAURICIO
author_sort	SAN MARTÍN,CRISTIAN
title	ELECTROCHEMICAL REDUCTION OF NITRITE AT POLYMERIC Co (II)-TETRA-3-AMINO-PHENYL-PORPHYRIN MODIFIED ELECTRODE
title_short	ELECTROCHEMICAL REDUCTION OF NITRITE AT POLYMERIC Co (II)-TETRA-3-AMINO-PHENYL-PORPHYRIN MODIFIED ELECTRODE
title_full	ELECTROCHEMICAL REDUCTION OF NITRITE AT POLYMERIC Co (II)-TETRA-3-AMINO-PHENYL-PORPHYRIN MODIFIED ELECTRODE
title_fullStr	ELECTROCHEMICAL REDUCTION OF NITRITE AT POLYMERIC Co (II)-TETRA-3-AMINO-PHENYL-PORPHYRIN MODIFIED ELECTRODE
title_full_unstemmed	ELECTROCHEMICAL REDUCTION OF NITRITE AT POLYMERIC Co (II)-TETRA-3-AMINO-PHENYL-PORPHYRIN MODIFIED ELECTRODE
title_sort	electrochemical reduction of nitrite at polymeric co (ii)-tetra-3-amino-phenyl-porphyrin modified electrode
publisher	Sociedad Chilena de Química
publishDate	2007
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072007000400008
work_keys_str_mv	AT sanmartincristian electrochemicalreductionofnitriteatpolymericcoiitetra3aminophenylporphyrinmodifiedelectrode AT dreysepaulina electrochemicalreductionofnitriteatpolymericcoiitetra3aminophenylporphyrinmodifiedelectrode AT garciacamilo electrochemicalreductionofnitriteatpolymericcoiitetra3aminophenylporphyrinmodifiedelectrode AT calfumankarla electrochemicalreductionofnitriteatpolymericcoiitetra3aminophenylporphyrinmodifiedelectrode AT villagradiego electrochemicalreductionofnitriteatpolymericcoiitetra3aminophenylporphyrinmodifiedelectrode AT isaacsmauricio electrochemicalreductionofnitriteatpolymericcoiitetra3aminophenylporphyrinmodifiedelectrode
_version_	1718445378698739712

ELECTROCHEMICAL REDUCTION OF NITRITE AT POLYMERIC Co (II)-TETRA-3-AMINO-PHENYL-PORPHYRIN MODIFIED ELECTRODE

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