Electrochemical Behaviour of PSS-Functionalized Silica Films Prepared by Electroassisted Deposition of Sol–Gel Precursors
Por favor, use este identificador para citar o enlazar este ítem:
http://hdl.handle.net/10045/53149
Título: | Electrochemical Behaviour of PSS-Functionalized Silica Films Prepared by Electroassisted Deposition of Sol–Gel Precursors |
---|---|
Autor/es: | Gamero-Quijano, Alonso | Huerta Arráez, Francisco | Salinas-Torres, David | Morallon, Emilia | Montilla, Francisco |
Grupo/s de investigación o GITE: | Electrocatálisis y Electroquímica de Polímeros |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Electrochemical sensors | Electroassisted deposition | Dopamine | Naphthoquinone | Molecular transport |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | ene-2015 |
Editor: | Springer Science+Business Media New York |
Cita bibliográfica: | Electrocatalysis. 2015, 6(1): 33-41. doi:10.1007/s12678-014-0215-0 |
Resumen: | Porous, electrically insulating SiO2 layers containing polystyrene sulfonate (PSS) were deposited on glassy carbon electrodes by an electrochemically assisted deposition method. The obtained material was characterized by microscopic, spectroscopic and thermal techniques. Silica-PSS films modify the electrochemical response of the glassy carbon electrodes against selected redox probes. Positively charged species show reduced diffusivities across the SiO2-PSS pores, which resulted in a concentration ratio higher than 1 for these species. The opposite behaviour was found for negatively charged redox probes. These observations can be interpreted in terms of the different affinity of the GC/SiO2-PSS-modified electrode for the electroactive species, as a consequence of the negatively charged porous silica. |
Patrocinador/es: | Financial support from the Spanish Ministerio de Economía y Competitividad and FEDER (MAT2010-15273) and Fundación Ramón Areces is gratefully acknowledged. Financial support from the Generalitat Valenciana is acknowledged (PROMETEO2013/038). A.G.Q. thanks go to Generalitat Valenciana for a Santiago Grisolia grant. D.S.T. thanks Spanish Ministerio de Economía y Competitividad for an FPI grant (BES-2010-035238). |
URI: | http://hdl.handle.net/10045/53149 |
ISSN: | 1868-2529 (Print) | 1868-5994 (Online) |
DOI: | 10.1007/s12678-014-0215-0 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © Springer Science+Business Media New York 2014. The final publication is available at Springer via http://dx.doi.org/10.1007/s12678-014-0215-0 |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1007/s12678-014-0215-0 |
Aparece en las colecciones: | INV - GEPE - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
---|---|---|---|---|
2015_Gamero_etal_Electrocatalysis_final.pdf | Versión final (acceso restringido) | 1,38 MB | Adobe PDF | Abrir Solicitar una copia |
Todos los documentos en RUA están protegidos por derechos de autor. Algunos derechos reservados.