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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/104356
Ver los metadatos del registro completo
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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 |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/104356 |
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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 |
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openAccess |
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http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ Creative Commons Attribution-NonCommercial-NoDerivs 2.5 Argentina (CC BY-NC-ND 2.5) |
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