pH effect on the synthesis of different size silver nanoparticles evaluated by DLS and their size-dependent antimicrobial activity
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
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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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 |
_version_ |
1752126693457264640 |