Electrochemical Characterisation of Platinum Nanoparticles Prepared in a Water-in-Oil Microemulsion in the Presence of Different Modifiers and Metal Precursors
Por favor, use este identificador para citar o enlazar este ítem:
http://hdl.handle.net/10045/64745
Título: | Electrochemical Characterisation of Platinum Nanoparticles Prepared in a Water-in-Oil Microemulsion in the Presence of Different Modifiers and Metal Precursors |
---|---|
Autor/es: | Martínez-Rodríguez, Roberto A. | Vidal-Iglesias, Francisco J. | Solla-Gullón, José | Cabrera, Carlos R. | Feliu, Juan M. |
Grupo/s de investigación o GITE: | Electroquímica Aplicada y Electrocatálisis | Electroquímica de Superficies |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica |
Palabras clave: | Electrocatalysis | Microemulsions | Nanoparticles | Platinum | Particle shape |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | oct-2016 |
Editor: | Wiley-VCH Verlag GmbH & Co. KGaA |
Cita bibliográfica: | ChemElectroChem. 2016, 3(10): 1601-1608. doi:10.1002/celc.201600295 |
Resumen: | In this work, water-in-oil microemulsions are used in the presence of various modifiers and metal precursors to obtain preferentially oriented Pt nanoparticles. Preferentially oriented cubic nanoparticles, enriched in (100) sites, are prepared using specific concentrations of HCl, HBr, H2SO4 and H3PO4. By contrast, the use of citric and oxalic acids increases the amount of (111) sites, albeit not significantly. Nanoparticles are electrochemically characterised by hydrogen and Ge adsorption/desorption processes, as well as CO stripping. Finally, the electrocatalytic activity of the nanoparticles having the highest percentage of (100) sites is evaluated for ammonia oxidation, confirming the electrochemical characterisation results. The results obtained indicate that, 15 % HCl-modified Pt nanoparticles synthesised using K2PtCl4 as metal precursor displayed the highest amount of (100) sites (46.7 %), and gave the highest peak current density for ammonia oxidation, around fivefold that of polyoriented Pt. |
Patrocinador/es: | This work was financially supported by the Ministerio de Economía y Competitividad (projects CTQ2013-44083-P and CTQ2013-48280-C3-3-R) and Generalitat Valenciana (project PROMETEOII/2014/013 and Beca Santiago Grisolía). |
URI: | http://hdl.handle.net/10045/64745 |
ISSN: | 2196-0216 |
DOI: | 10.1002/celc.201600295 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1002/celc.201600295 |
Aparece en las colecciones: | INV - EQSUP - Artículos de Revistas INV - LEQA - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
---|---|---|---|---|
2016_Martinez-Rodriguez_etal_ChemElectroChem_final.pdf | Versión final (acceso restringido) | 1,63 MB | Adobe PDF | Abrir Solicitar una copia |
2016_Martinez-Rodriguez_etal_ChemElectroChem_rev.pdf | Versión revisada (acceso abierto) | 2,1 MB | Adobe PDF | Abrir Vista previa |
Todos los documentos en RUA están protegidos por derechos de autor. Algunos derechos reservados.