pH effect on the synthesis of different size silver nanoparticles evaluated by DLS and their size-dependent antimicrobial activity

Detalhes bibliográficos
Autor(a) principal: Gontijo,Leiriana Aparecida Pinto
Data de Publicação: 2020
Outros Autores: Raphael,Ellen, Ferrari,Daniela Pereira Santos, Ferrari,Jefferson Luis, Lyon,Juliana Pereira, Schiavon,Marco Antônio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Matéria (Rio de Janeiro. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762020000400305
Resumo: ABSTRACT This paper reports citrate-stabilized silver nanoparticles (AgNPs) synthesized by nitrate ion chemical reduction with sodium borohydride, at different pHs (2–9). The AgNPs synthesized by this method exhibited size distribution from 5 to 249 nm, depending on pH, as determined by dynamic light scattering, and morphology spherical, as determined by transmission electron microscopy. In pH range 3–7 occurred aggregation of the nanoparticles. The size distribution depending on pH was determined by dynamic light scattering. The zeta potential was determined, and the colloidal stability was correlated with nanoparticles aggregation at different pHs. The size-dependent antimicrobial activity was evaluated for two solutions, wherein both samples exhibited antimicrobial activity, although the smallest AgNPs without agglomeration have enhanced antimicrobial properties.
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spelling pH effect on the synthesis of different size silver nanoparticles evaluated by DLS and their size-dependent antimicrobial activitySilver NanoparticlesZeta PotentialDynamic Light ScatteringSize DistributionAntimicrobial ActivityABSTRACT This paper reports citrate-stabilized silver nanoparticles (AgNPs) synthesized by nitrate ion chemical reduction with sodium borohydride, at different pHs (2–9). The AgNPs synthesized by this method exhibited size distribution from 5 to 249 nm, depending on pH, as determined by dynamic light scattering, and morphology spherical, as determined by transmission electron microscopy. In pH range 3–7 occurred aggregation of the nanoparticles. The size distribution depending on pH was determined by dynamic light scattering. The zeta potential was determined, and the colloidal stability was correlated with nanoparticles aggregation at different pHs. The size-dependent antimicrobial activity was evaluated for two solutions, wherein both samples exhibited antimicrobial activity, although the smallest AgNPs without agglomeration have enhanced antimicrobial properties.Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH22020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762020000400305Matéria (Rio de Janeiro) v.25 n.4 2020reponame:Matéria (Rio de Janeiro. Online)instname:Matéria (Rio de Janeiro. Online)instacron:RLAM10.1590/s1517-707620200004.1145info:eu-repo/semantics/openAccessGontijo,Leiriana Aparecida PintoRaphael,EllenFerrari,Daniela Pereira SantosFerrari,Jefferson LuisLyon,Juliana PereiraSchiavon,Marco Antônioeng2020-12-08T00:00:00Zoai:scielo:S1517-70762020000400305Revistahttp://www.materia.coppe.ufrj.br/https://old.scielo.br/oai/scielo-oai.php||materia@labh2.coppe.ufrj.br1517-70761517-7076opendoar:2020-12-08T00:00Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)false
dc.title.none.fl_str_mv pH effect on the synthesis of different size silver nanoparticles evaluated by DLS and their size-dependent antimicrobial activity
title pH effect on the synthesis of different size silver nanoparticles evaluated by DLS and their size-dependent antimicrobial activity
spellingShingle pH effect on the synthesis of different size silver nanoparticles evaluated by DLS and their size-dependent antimicrobial activity
Gontijo,Leiriana Aparecida Pinto
Silver Nanoparticles
Zeta Potential
Dynamic Light Scattering
Size Distribution
Antimicrobial Activity
title_short pH effect on the synthesis of different size silver nanoparticles evaluated by DLS and their size-dependent antimicrobial activity
title_full pH effect on the synthesis of different size silver nanoparticles evaluated by DLS and their size-dependent antimicrobial activity
title_fullStr pH effect on the synthesis of different size silver nanoparticles evaluated by DLS and their size-dependent antimicrobial activity
title_full_unstemmed pH effect on the synthesis of different size silver nanoparticles evaluated by DLS and their size-dependent antimicrobial activity
title_sort pH effect on the synthesis of different size silver nanoparticles evaluated by DLS and their size-dependent antimicrobial activity
author Gontijo,Leiriana Aparecida Pinto
author_facet Gontijo,Leiriana Aparecida Pinto
Raphael,Ellen
Ferrari,Daniela Pereira Santos
Ferrari,Jefferson Luis
Lyon,Juliana Pereira
Schiavon,Marco Antônio
author_role author
author2 Raphael,Ellen
Ferrari,Daniela Pereira Santos
Ferrari,Jefferson Luis
Lyon,Juliana Pereira
Schiavon,Marco Antônio
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Gontijo,Leiriana Aparecida Pinto
Raphael,Ellen
Ferrari,Daniela Pereira Santos
Ferrari,Jefferson Luis
Lyon,Juliana Pereira
Schiavon,Marco Antônio
dc.subject.por.fl_str_mv Silver Nanoparticles
Zeta Potential
Dynamic Light Scattering
Size Distribution
Antimicrobial Activity
topic Silver Nanoparticles
Zeta Potential
Dynamic Light Scattering
Size Distribution
Antimicrobial Activity
description ABSTRACT This paper reports citrate-stabilized silver nanoparticles (AgNPs) synthesized by nitrate ion chemical reduction with sodium borohydride, at different pHs (2–9). The AgNPs synthesized by this method exhibited size distribution from 5 to 249 nm, depending on pH, as determined by dynamic light scattering, and morphology spherical, as determined by transmission electron microscopy. In pH range 3–7 occurred aggregation of the nanoparticles. The size distribution depending on pH was determined by dynamic light scattering. The zeta potential was determined, and the colloidal stability was correlated with nanoparticles aggregation at different pHs. The size-dependent antimicrobial activity was evaluated for two solutions, wherein both samples exhibited antimicrobial activity, although the smallest AgNPs without agglomeration have enhanced antimicrobial properties.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762020000400305
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762020000400305
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1517-707620200004.1145
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
publisher.none.fl_str_mv Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
dc.source.none.fl_str_mv Matéria (Rio de Janeiro) v.25 n.4 2020
reponame:Matéria (Rio de Janeiro. Online)
instname:Matéria (Rio de Janeiro. Online)
instacron:RLAM
instname_str Matéria (Rio de Janeiro. Online)
instacron_str RLAM
institution RLAM
reponame_str Matéria (Rio de Janeiro. Online)
collection Matéria (Rio de Janeiro. Online)
repository.name.fl_str_mv Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)
repository.mail.fl_str_mv ||materia@labh2.coppe.ufrj.br
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