Artículo
Measure of Zeta Potential of Titanium Pillared Clays
Fecha de publicación:
07/2015
Editorial:
Elsevier
Revista:
Procedia Materials Science
ISSN:
2211-8128
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The change of the zeta potential, ζ, with the pH as well as the isoelectric point of a charged particle are electrokinetic properties that characterize it. The TiO2 pillared clays are very interesting materials because of their ability to adsorb polluting substances and their potential to be used as photocatalyst in their degradation. That is why the preparation and characterization of these materials are important to improve their use in environmental chemistry. The aim of this work was the comprehension of the electrokinetic behavior of TiO2 pillared clays by the determination of ζ and characterization of two TiO2 pillared clays and two TiO2pillared organoclays prepared using different acid of hydrolysis, as well as in the original clay. The pillared organoclays presenteda lower variation in the shape and the slope of the curves and in the IEP respect to that of the original clay. This behavioris due to the fact that the pillared organoclays has a lower content of pillars than that of the TiO2pillared clays, because the alkylamonium cation blocks part of the available exchanging sites for the anchored of the TiO2.xH2O species. When these materials are calcined the number of negative charged sites neutralized by TiO2will be minor than that observed for the pillared clays prepared in absence of surfactant. In consequence we can say that the preparation of TiO2 pillared clays using alkylammonium allows to obtain materials with a controlled superficial charge and porosity that can favor the access of polluting substances and their subsequent degradation in photatalytic treatments process.
Palabras clave:
Pillared Clays
,
Organopillared Clays
,
Zeta Potential
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(INIQUI)
Articulos de INST.DE INVEST.PARA LA INDUSTRIA QUIMICA (I)
Articulos de INST.DE INVEST.PARA LA INDUSTRIA QUIMICA (I)
Citación
Zacur Vercellone, Sofia Susana; Sham, Edgardo Ling; Farfan Torres, Elsa Monica; Measure of Zeta Potential of Titanium Pillared Clays; Elsevier; Procedia Materials Science; 8; 7-2015; 599-607
Compartir
Altmétricas