Green synthesis of polypyrrole-supported metal catalysts: application to nitrate removal in water
Por favor, use este identificador para citar o enlazar este ítem:
http://hdl.handle.net/10045/57845
Título: | Green synthesis of polypyrrole-supported metal catalysts: application to nitrate removal in water |
---|---|
Autor/es: | García Fernández, María Jesús | Buitrago Sierra, Robison | Pastor-Blas, M. Mercedes | Soares, Olívia Salomé G.P. | Pereira, Manuel Fernando R. | Sepúlveda-Escribano, Antonio |
Grupo/s de investigación o GITE: | Materiales Avanzados |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Green synthesis | Polypyrrole-supported | Metal catalysts | Nitrate removal | Water |
Área/s de conocimiento: | Química Inorgánica |
Fecha de publicación: | 1-abr-2015 |
Editor: | Royal Society of Chemistry |
Cita bibliográfica: | RSC Advances. 2015, 5: 32706-32713. doi:10.1039/C5RA03441H |
Resumen: | Pt and Pt/Sn catalysts supported on polypyrrole (PPy) have been prepared using Ar plasma to reduce the metal precursors dispersed on the polymer. The PPy support was synthesized by chemical polymerization of pyrrole with FeCl3·6H2O, this leading to the conducting form of the polymer (conductimetric measurements). The Ar plasma treatment produced a partial reduction of platinum ions, anchored as platinum chloro-complexes to the PPy chain, into metallic platinum. A homogeneous distribution of Pt and Sn nanoparticles was observed by TEM. Activity of the PPy-supported catalysts was evaluated in the reduction of aqueous nitrate with H2 at room temperature. Nitrate concentration in water below the maximum acceptable level of 50 mg L−1 was achieved with all catalysts. However, considering not only efficiency in nitrate reduction, but also minimized concentrations of undesired nitrite and ammonium, the monometallic Pt catalyst seems to be the most promising one. |
Patrocinador/es: | Financial support from Generalitat Valenciana, Spain (PROMETEO/2009/002 – FEDER and PROMETEOII/2014/004) is gratefully acknowledged. Support by PEst-C/EQB/LA0020/2013, financed by FEDER through COMPETE – Programa Operacional Factores de Competitividade, and by FCT – Fundação para a Ciência e a Tecnologia; NORTE-07-0162-FEDER-000050, financed by QREN, ON2 and FEDER is acknowledged by LCM group. O. S. G. P. Soares acknowledges the grant received from FCT (SFRH/BPD/97689/2013). |
URI: | http://hdl.handle.net/10045/57845 |
ISSN: | 2046-2069 |
DOI: | 10.1039/C5RA03441H |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © Royal Society of Chemistry 2015 |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1039/C5RA03441H |
Aparece en las colecciones: | INV - LMA - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
---|---|---|---|---|
2015_Garcia_etal_RSCAdv_final.pdf | Versión final (acceso restringido) | 1,16 MB | Adobe PDF | Abrir Solicitar una copia |
2015_Garcia_etal_RSCAdv_preprint.pdf | Preprint (acceso abierto) | 939,59 kB | Adobe PDF | Abrir Vista previa |
Todos los documentos en RUA están protegidos por derechos de autor. Algunos derechos reservados.