English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/93889
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 10 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

Clay-bionanocomposites with sacran megamolecules for the selective uptake of neodymium

Autor Alcântara, Ana C. S. ; Darder, Margarita ; Aranda, Pilar ; Ogawa, Makoto; Ruiz-Hitzky, Eduardo
Fecha de publicación 2014
EditorRoyal Society of Chemistry (Great Britain)
Citación Journal of Materials Chemistry A 2(5): 1391-1399 (2014)
ResumenSacran, an anionic megamolecular polysaccharide extracted from the cyanobacterium Aphanothece sacrum, is an interesting biopolymer for developing functional clay-based bionanocomposites due to its colloidal and metal complexing properties. This work introduces novel bionanocomposites based on the assembly of sacran to sepiolite, a fibrous hydrated magnesium silicate, reporting some of their special features. Sacran-sepiolite films show tensile moduli about twice that of neat sacran films, and improved resistance and integrity in aqueous solutions. These materials can act as adsorbents of lanthanide ions, profiting from the well-known adsorption properties of sepiolite and the ability of sacran to complex rare earth and heavy metal ions. Sacran-sepiolite materials show a clear preference for Nd3+ ions over Ce3+, Eu3+ and Gd3+, and the results confirm the influence of the conformation of sacran chains in crystalline domains on the adsorption properties. In fact, only those materials prepared from concentrated sacran solutions, with the polysaccharide chains arranged as liquid crystals, and involving around 27% (w/w) of sepiolite showed a remarkable synergistic effect on the retention of Nd3+ ions, being promising as biosorbents for the effective and selective recovery of neodymium from aqueous media. © 2014 The Royal Society of Chemistry.
URI http://hdl.handle.net/10261/93889
DOI10.1039/c3ta14145d
Identificadoresdoi: 10.1039/c3ta14145d
issn: 2050-7488
e-issn: 2050-7496
Aparece en las colecciones: (ICMM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.