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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Sociedade Brasileira de Química
2016
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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 |
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Fernández,Lenys Martínez,Edison Omar Zambrano,Hicher |
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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. |
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Sociedade Brasileira de Química |
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2016 |
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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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1756387632665853952 |