Electrocatalysis of H2O2 reduction/oxidation at model platinum surfaces
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Título: | Electrocatalysis of H2O2 reduction/oxidation at model platinum surfaces |
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Autor/es: | Sitta, Elton | Gómez Marín, Ana María | Aldaz Riera, Antonio | Feliu, Juan M. |
Grupo/s de investigación o GITE: | Electroquímica de Superficies | Electroquímica Aplicada y Electrocatálisis |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica |
Palabras clave: | Hydrogen peroxide oxidation | Hydrogen peroxide reduction | Platinum single crystals | Hanging meniscus rotating electrode |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | ago-2013 |
Editor: | Elsevier |
Cita bibliográfica: | Electrochemistry Communications. 2013, 33: 39-42. doi:10.1016/j.elecom.2013.04.014 |
Resumen: | Oxidation (HPOR) and reduction (HPRR) reactions of hydrogen peroxide were studied on platinum single crystalline surfaces. Experimental curves were fitted to a simple model in which the whole process is described by the sum of two independent, mass controlled reactions. It is shown that stepped surfaces are more catalytic than basal planes for both HPOR and HPRR reactions. On the contrary, on oxide covered surfaces, those having large {111} terraces are better electrocatalysts for HPRR, but worse for HPOR. These results shed light concerning H2O2 reactivity on platinum surfaces and may help to unveil oxygen reduction reaction mechanism. |
Patrocinador/es: | Support from the Spanish MICYNN through the project CTQ2010-16271 and GV through PROMETEO/2009/045 (FEDER) is greatly acknowledged. ES would like to thank CNPq (Brazil) for the scholarship (Grant No. 200939/2012-2). |
URI: | http://hdl.handle.net/10045/38757 |
ISSN: | 1388-2481 (Print) | 1873-1902 (Online) |
DOI: | 10.1016/j.elecom.2013.04.014 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/j.elecom.2013.04.014 |
Aparece en las colecciones: | INV - EQSUP - Artículos de Revistas INV - LEQA - Artículos de Revistas |
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2013_Sitta_etal_ElectCom_final.pdf | Versión final (acceso restringido) | 410,48 kB | Adobe PDF | Abrir Solicitar una copia |
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