Artículo
Insight into surface and structural changes of montmorillonite and organomontmorillonites loaded with Ag
Fernández Solarte, Alejandra María
; Villarroel Rocha, Jhonny
; Fernández Morantes, César
; Montes, María Luciana
; Sapag, Manuel Karim
; Curutchet, Gustavo Andres
; Torres Sanchez, Rosa Maria
Fecha de publicación:
02/2019
Editorial:
Elsevier France-editions Scientifiques Medicales Elsevier
Revista:
Comptes Rendus Chimie
ISSN:
1631-0748
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
A raw montmorillonite (MMT) and three organomontmorillonites (OMMTs) with different amounts of hexadecyltrimethylammonium bromide (HDTMABr), and further silver loading (MMT–Ag or OMMT–Ag) were used to study their surface and structural changes and fungicidal activity. For OMMT and OMMT–Ag samples, the specific surface area and micropore amount decreased with the increase in surfactant loading, whereas textural properties remained constant. Surfactant entrance into the interlayer with the increase in surfactant loading was irrespective of Ag loading, whereas a decreasing number of stacked clay platelets and loss of surfactant were found after Ag incorporation. Ag nanoparticles of different sizes and large silver aggregates found in OMMT–Ag altered the electric surface charge as compared with the OMMT samples. Although the surfactant loading up to actual 100% of the MMT cation exchange capacity decreased silver retention, for MH2–Ag sample (with 200% HDTMA loaded with respect to the MMT's cation exchange capacity, and further Ag loading) silver retention was close to that of MMT and null silver lixiviation could be assigned to the HDTMA–Ag complex and AgBr formation. Fungicidal activity was correlated with surfactant loading, increasing with Ag addition.
Palabras clave:
FUNGICIDAL ACTIVITY
,
MONTMORILLONITE
,
ORGANOMONTMORILLONITE
,
SILVER
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos (IIIA)
Articulos de INSTITUTO DE INVESTIGACION E INGENIERIA AMBIENTAL
Articulos de INSTITUTO DE INVESTIGACION E INGENIERIA AMBIENTAL
Articulos(CETMIC)
Articulos de CENTRO TECNOL.DE REC.MINERALES Y CERAMICA (I)
Articulos de CENTRO TECNOL.DE REC.MINERALES Y CERAMICA (I)
Articulos(IFLP)
Articulos de INST.DE FISICA LA PLATA
Articulos de INST.DE FISICA LA PLATA
Citación
Fernández Solarte, Alejandra María; Villarroel Rocha, Jhonny; Fernández Morantes, César; Montes, María Luciana; Sapag, Manuel Karim; et al.; Insight into surface and structural changes of montmorillonite and organomontmorillonites loaded with Ag; Elsevier France-editions Scientifiques Medicales Elsevier; Comptes Rendus Chimie; 22; 2-3; 2-2019; 142-153
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