Electrochemical behaviour of carbon dioxide on platinum and rhodium

The electroadsorption and electroreduction of carbon dioxide, and the subsequent electrooxidation of reduced carbon dioxide was studied on polycrystalline and electrofaceted Pt and on polycrystalline Rh electrodes. The influence of the adsorption potential and the adsorption time was established. Co...

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Autor principal: Martins, María Elisa
Formato: Articulo
Lenguaje:Inglés
Publicado: 2005
Materias:
Química
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/176054
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SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-176054
record_format dspace
spelling I19-R120-10915-1760542025-02-04T04:15:23Z http://sedici.unlp.edu.ar/handle/10915/176054 Electrochemical behaviour of carbon dioxide on platinum and rhodium Martins, María Elisa 2005 2025-02-03T17:23:11Z en Química The electroadsorption and electroreduction of carbon dioxide, and the subsequent electrooxidation of reduced carbon dioxide was studied on polycrystalline and electrofaceted Pt and on polycrystalline Rh electrodes. The influence of the adsorption potential and the adsorption time was established. Combining voltammetric charge measurements and differential electrochemical mass spectrometry (DEMS) analysis, three adsorbates were tentatively identified, namely COOH and CO in bridge and linear configurations on Pt, and COH in triple and single adsorption configurations on Rh. By applying medium frequency potential routines on the Pt-adsorbate/sulphuric acid interface, the existence of equilibrium between adsorbates was demonstrated. Se estudia la electroadsorción y la electrorreducción de dióxido de carbono como así también la electrooxidación del dióxido de carbono reducido sobre Pt policristalino y electrofacetado y sobre Rh policristalino. Se determina la influencia del potencial y del tiempo de adsorción. Mediante el empleo de técnicas combinadas voltamperométricas y de espectrometría de masa diferencial (DEMS), se identificaron tres adsorbatos posibles sobre Pt, COOH y CO en configuración lineal y puente, y dos sobre Rh, COH en configuraciones de adsorción simple y triple. Mediante la aplicación de perturbaciones de potencial a la interfase Pt-adsorbato/ácido sulfúrico acuoso, se demuestra la existencia de un equilibrio entre los adsorbatos. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 143-153
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
spellingShingle Química
Martins, María Elisa
Electrochemical behaviour of carbon dioxide on platinum and rhodium
topic_facet Química
description The electroadsorption and electroreduction of carbon dioxide, and the subsequent electrooxidation of reduced carbon dioxide was studied on polycrystalline and electrofaceted Pt and on polycrystalline Rh electrodes. The influence of the adsorption potential and the adsorption time was established. Combining voltammetric charge measurements and differential electrochemical mass spectrometry (DEMS) analysis, three adsorbates were tentatively identified, namely COOH and CO in bridge and linear configurations on Pt, and COH in triple and single adsorption configurations on Rh. By applying medium frequency potential routines on the Pt-adsorbate/sulphuric acid interface, the existence of equilibrium between adsorbates was demonstrated.
format Articulo
Articulo
author Martins, María Elisa
author_facet Martins, María Elisa
author_sort Martins, María Elisa
title Electrochemical behaviour of carbon dioxide on platinum and rhodium
title_short Electrochemical behaviour of carbon dioxide on platinum and rhodium
title_full Electrochemical behaviour of carbon dioxide on platinum and rhodium
title_fullStr Electrochemical behaviour of carbon dioxide on platinum and rhodium
title_full_unstemmed Electrochemical behaviour of carbon dioxide on platinum and rhodium
title_sort electrochemical behaviour of carbon dioxide on platinum and rhodium
publishDate 2005
url http://sedici.unlp.edu.ar/handle/10915/176054
work_keys_str_mv AT martinsmariaelisa electrochemicalbehaviourofcarbondioxideonplatinumandrhodium
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