Additive synthesis by sol-gel method for its use as antimicrobial

The antimicrobial activity of silver nanoparticles makes this chemical element attractive for their incorporation in different materials. Additionally, heteropolyacids (HPAs) have advantages as catalysts which make them environmentally very interesting. The objective of this work is to incorporate i...

Descripción completa

Detalles Bibliográficos
Autores principales: Arreche, Romina Andrea, Hernández, María Florencia, Blanco, Mirta Noemí, Vázquez, Patricia Graciela
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Ingeniería en Materiales
Sol-gel
Additives
Heteropolyacids
Ag
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/104356
http://hdl.handle.net/11336/39575
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-104356
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ingeniería en Materiales
Sol-gel
Additives
Heteropolyacids
Ag
spellingShingle Ingeniería en Materiales
Sol-gel
Additives
Heteropolyacids
Ag
Arreche, Romina Andrea
Hernández, María Florencia
Blanco, Mirta Noemí
Vázquez, Patricia Graciela
Additive synthesis by sol-gel method for its use as antimicrobial
topic_facet Ingeniería en Materiales
Sol-gel
Additives
Heteropolyacids
Ag
description The antimicrobial activity of silver nanoparticles makes this chemical element attractive for their incorporation in different materials. Additionally, heteropolyacids (HPAs) have advantages as catalysts which make them environmentally very interesting. The objective of this work is to incorporate in a silica matrix obtained by sol-gel an HPA together with Ag, for their use as fillers in paints or adhesives. Six samples were synthesized, using tetraethoxysilane, methyltrimethoxysilane, acetic acid, molybdophosphoric acid and silver acetate. The silicas were characterized by potentiometric titration, XRD, SEM, TEM, SBET and FT-IR. When HPA is used instead of acetic acid, a variation on the final acidity is produced. The specific surface area decreases when HPA is incorporated into the silica synthesized using tetraethoxysilane as precursor, noticing a slight increase when Ag is added because a different distribution of HPA in the matrix. By SEM, it was observed that the particle size is bigger when the silicas are synthesized with TEOS-HPA, but it still shows the characteristic morphology of bulk silica. Additionally, preliminary test to evaluate the antimicrobial properties of the solids were carried out with fungi as <i>Chaetomium globosum</i> and <i>Alternaria alternate</i>, isolated from contaminated paints, and the first results are encouraging to continue with the development of these materials.
format Articulo
Articulo
author Arreche, Romina Andrea
Hernández, María Florencia
Blanco, Mirta Noemí
Vázquez, Patricia Graciela
author_facet Arreche, Romina Andrea
Hernández, María Florencia
Blanco, Mirta Noemí
Vázquez, Patricia Graciela
author_sort Arreche, Romina Andrea
title Additive synthesis by sol-gel method for its use as antimicrobial
title_short Additive synthesis by sol-gel method for its use as antimicrobial
title_full Additive synthesis by sol-gel method for its use as antimicrobial
title_fullStr Additive synthesis by sol-gel method for its use as antimicrobial
title_full_unstemmed Additive synthesis by sol-gel method for its use as antimicrobial
title_sort additive synthesis by sol-gel method for its use as antimicrobial
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/104356
http://hdl.handle.net/11336/39575
work_keys_str_mv AT arrecherominaandrea additivesynthesisbysolgelmethodforitsuseasantimicrobial
AT hernandezmariaflorencia additivesynthesisbysolgelmethodforitsuseasantimicrobial
AT blancomirtanoemi additivesynthesisbysolgelmethodforitsuseasantimicrobial
AT vazquezpatriciagraciela additivesynthesisbysolgelmethodforitsuseasantimicrobial
bdutipo_str Repositorios
_version_ 1764820442142474242

Ejemplares similares