ELECTROCHEMICAL OXIDATION OF ETHYLENE AT PANI/Pt AND Ag/PANI/Pt MODIFIED ELECTRODES

ELECTROCHEMICAL OXIDATION OF ETHYLENE AT PANI/Pt AND Ag/PANI/Pt MODIFIED ELECTRODES

The electrochemical behavior of ethylene on PANI/Pt and Ag/PANI/Pt modified electrodes was investigated in different media. Morphology of the deposits of PANI were observed by SEM analysis, complemented by the EDX techniques to obtain the Ag composition that shows that Ag is deposited in the polymeric matrix which covered the whole platinum surface. The electrodic system comprising Ag/PANI/ Pt electrode exhibited a more important electrocatalytic response for ethylene oxidation in neutral solutions than the PAN/Pt and Pt electrodes at 20 ºC.The results suggest that the oxidation of ethylene on Ag/PANI/Pt electrode is limited by adsorption-controlled reaction while the oxidation at PANI/Pt is mass transport-limited.

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Main Authors: Fernández,Lenys, Martínez,Edison Omar, Zambrano,Hicher
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Química 2016
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016000800932
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spelling oai:scielo:S0100-404220160008009322016-10-18ELECTROCHEMICAL OXIDATION OF ETHYLENE AT PANI/Pt AND Ag/PANI/Pt MODIFIED ELECTRODESFernández,LenysMartínez,Edison OmarZambrano,Hicher ethylene electrooxidation polyaniline electrocatalysis silver microparticles The electrochemical behavior of ethylene on PANI/Pt and Ag/PANI/Pt modified electrodes was investigated in different media. Morphology of the deposits of PANI were observed by SEM analysis, complemented by the EDX techniques to obtain the Ag composition that shows that Ag is deposited in the polymeric matrix which covered the whole platinum surface. The electrodic system comprising Ag/PANI/ Pt electrode exhibited a more important electrocatalytic response for ethylene oxidation in neutral solutions than the PAN/Pt and Pt electrodes at 20 ºC.The results suggest that the oxidation of ethylene on Ag/PANI/Pt electrode is limited by adsorption-controlled reaction while the oxidation at PANI/Pt is mass transport-limited.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaQuímica Nova v.39 n.8 20162016-09-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016000800932en10.5935/0100-4042.20160115
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Fernández,Lenys
Martínez,Edison Omar
Zambrano,Hicher
spellingShingle Fernández,Lenys
Martínez,Edison Omar
Zambrano,Hicher
ELECTROCHEMICAL OXIDATION OF ETHYLENE AT PANI/Pt AND Ag/PANI/Pt MODIFIED ELECTRODES
author_facet Fernández,Lenys
Martínez,Edison Omar
Zambrano,Hicher
author_sort Fernández,Lenys
title ELECTROCHEMICAL OXIDATION OF ETHYLENE AT PANI/Pt AND Ag/PANI/Pt MODIFIED ELECTRODES
title_short ELECTROCHEMICAL OXIDATION OF ETHYLENE AT PANI/Pt AND Ag/PANI/Pt MODIFIED ELECTRODES
title_full ELECTROCHEMICAL OXIDATION OF ETHYLENE AT PANI/Pt AND Ag/PANI/Pt MODIFIED ELECTRODES
title_fullStr ELECTROCHEMICAL OXIDATION OF ETHYLENE AT PANI/Pt AND Ag/PANI/Pt MODIFIED ELECTRODES
title_full_unstemmed ELECTROCHEMICAL OXIDATION OF ETHYLENE AT PANI/Pt AND Ag/PANI/Pt MODIFIED ELECTRODES
title_sort electrochemical oxidation of ethylene at pani/pt and ag/pani/pt modified electrodes
description The electrochemical behavior of ethylene on PANI/Pt and Ag/PANI/Pt modified electrodes was investigated in different media. Morphology of the deposits of PANI were observed by SEM analysis, complemented by the EDX techniques to obtain the Ag composition that shows that Ag is deposited in the polymeric matrix which covered the whole platinum surface. The electrodic system comprising Ag/PANI/ Pt electrode exhibited a more important electrocatalytic response for ethylene oxidation in neutral solutions than the PAN/Pt and Pt electrodes at 20 ºC.The results suggest that the oxidation of ethylene on Ag/PANI/Pt electrode is limited by adsorption-controlled reaction while the oxidation at PANI/Pt is mass transport-limited.
publisher Sociedade Brasileira de Química
publishDate 2016
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016000800932
work_keys_str_mv AT fernandezlenys electrochemicaloxidationofethyleneatpaniptandagpaniptmodifiedelectrodes
AT martinezedisonomar electrochemicaloxidationofethyleneatpaniptandagpaniptmodifiedelectrodes
AT zambranohicher electrochemicaloxidationofethyleneatpaniptandagpaniptmodifiedelectrodes
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