English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/167939
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Synthesis and Characterization of Hollow Mesoporous Silica Nanoparticles for Smart Corrosion Protection

AutorZea, Cristina; Alcántara, Jenifer; Barranco-García, Rosa; Morcillo, Manuel; de la Fuente, Daniel
Fecha de publicación28-jun-2018
EditorMultidisciplinary Digital Publishing Institute
CitaciónNanomaterials 8 (7): 478 (2018)
ResumenDifferent approaches have been considered for the development of smart anticorrosive coatings by the incorporation of nanocontainers loaded with corrosion inhibitors into the protective layer. Nanocontainers are designed to allow a controlled release of the inhibitor in response to an external stimulus, thus, achieving more efficient and more economical use of the active component. In this case, a pH change is a very interesting stimulus to trigger the release because corrosion processes cause local pH changes. To this end, a special focus has been placed on the use of mesoporous silica nanoparticles (MSN) as nanocontainers due to their interesting characteristics, such as larger surface area, versatile functionalisation, stability, etc. However, the use of hollow mesoporous silica nanoparticles (HMSN), with a large central hole combined with an external mesoporous silica shell, offers an additional advantage due to the higher loading capacity. In the present work, HMSN have been efficiently synthesised, loaded with sodium phosphomolybdate, as a non-toxic alternative to the use of chromates, and encapsulated by a layer of an oppositely charged polyelectrolyte, poly(diallyldimethylammonium chloride) (PDDA). The morphology and textural properties of the produced nanocapsules have been studied by different techniques (SEM/EDS, TEM/EDS, Brunauer–Emmett–Teller (BET) analysis method, ζ-potential). Finally, the releasing capacity and corrosion protection at different pH values have been studied, confirming the smart behaviour of the encapsulated loaded HMSN.
URIhttp://hdl.handle.net/10261/167939
Identificadoresdoi: 10.3390/nano8070478
Aparece en las colecciones: Colección MDPI
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
nanomaterials-08-00478.pdf2,35 MBAdobe 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.