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

Autores
Arreche, Romina Andrea; Hernández, María Florencia; Blanco, Mirta Noemí; Vázquez, Patricia Graciela
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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 Chaetomium globosum and Alternaria alternate, isolated from contaminated paints, and the first results are encouraging to continue with the development of these materials.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
Materia
Ingeniería en Materiales
Sol-gel
Additives
Heteropolyacids
Ag
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/104356

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network_name_str SEDICI (UNLP)
spelling Additive synthesis by sol-gel method for its use as antimicrobialArreche, Romina AndreaHernández, María FlorenciaBlanco, Mirta NoemíVázquez, Patricia GracielaIngeniería en MaterialesSol-gelAdditivesHeteropolyacidsAgThe 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.Centro de Investigación y Desarrollo en Ciencias Aplicadas2015-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf397-405http://sedici.unlp.edu.ar/handle/10915/104356enginfo:eu-repo/semantics/altIdentifier/url/http://hdl.handle.net/11336/39575info:eu-repo/semantics/altIdentifier/issn/2211-8128info:eu-repo/semantics/altIdentifier/doi/10.1016/j.mspro.2015.04.090info:eu-repo/semantics/altIdentifier/hdl/11336/39575info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/2.5/ar/Creative Commons Attribution-NonCommercial-NoDerivs 2.5 Argentina (CC BY-NC-ND 2.5)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:22:42Zoai:sedici.unlp.edu.ar:10915/104356Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:22:43.201SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Additive synthesis by sol-gel method for its use as antimicrobial
title Additive synthesis by sol-gel method for its use as antimicrobial
spellingShingle Additive synthesis by sol-gel method for its use as antimicrobial
Arreche, Romina Andrea
Ingeniería en Materiales
Sol-gel
Additives
Heteropolyacids
Ag
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
dc.creator.none.fl_str_mv Arreche, Romina Andrea
Hernández, María Florencia
Blanco, Mirta Noemí
Vázquez, Patricia Graciela
author Arreche, Romina Andrea
author_facet Arreche, Romina Andrea
Hernández, María Florencia
Blanco, Mirta Noemí
Vázquez, Patricia Graciela
author_role author
author2 Hernández, María Florencia
Blanco, Mirta Noemí
Vázquez, Patricia Graciela
author2_role author
author
author
dc.subject.none.fl_str_mv Ingeniería en Materiales
Sol-gel
Additives
Heteropolyacids
Ag
topic Ingeniería en Materiales
Sol-gel
Additives
Heteropolyacids
Ag
dc.description.none.fl_txt_mv 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.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
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.
publishDate 2015
dc.date.none.fl_str_mv 2015-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/104356
url http://sedici.unlp.edu.ar/handle/10915/104356
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://hdl.handle.net/11336/39575
info:eu-repo/semantics/altIdentifier/issn/2211-8128
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.mspro.2015.04.090
info:eu-repo/semantics/altIdentifier/hdl/11336/39575
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Creative Commons Attribution-NonCommercial-NoDerivs 2.5 Argentina (CC BY-NC-ND 2.5)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Creative Commons Attribution-NonCommercial-NoDerivs 2.5 Argentina (CC BY-NC-ND 2.5)
dc.format.none.fl_str_mv application/pdf
397-405
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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