Silver nanoparticles stabilized by ramnolipids: Effect of pH

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.creatorSalazar-Bryam, Ana Maria [UNESP]-
Autor(es): dc.creatorYoshimura, Ingrid [UNESP]-
Autor(es): dc.creatorSantos, Larissa Provasi [UNESP]-
Autor(es): dc.creatorMoura, Cinthia Cristine [UNESP]-
Autor(es): dc.creatorSantos, Caio Carvalho [UNESP]-
Autor(es): dc.creatorSilva, Vinicius Luiz [UNESP]-
Autor(es): dc.creatorLovaglio, Roberta Barros-
Autor(es): dc.creatorCosta Marques, Rodrigo Fernando [UNESP]-
Autor(es): dc.creatorJafelicci Junior, Miguel [UNESP]-
Autor(es): dc.creatorContiero, Jonas [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:54:17Z-
Data de disponibilização: dc.date.available2022-02-22T00:54:17Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.colsurfb.2021.111883-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/208736-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/208736-
Descrição: dc.descriptionRhamnolipids are glycolipid biosurfactants that have remarkable physicochemical characteristics, such as the capacity for self-assembly, which makes these biomolecules a promising option for application in nanobiotechnology. Rhamnolipids produced from a low-cost carbon source (glycerol) were used to stabilize silver nanoparticles. Silver nanoparticles (AgNPs) have been the subject of studies due to their physical chemical as well as biological properties, which corroborate their catalytic and antimicrobial activity. We compared nanoparticles obtained with three different pH values during synthesis (5, 7 and 9) in the presence of rhamnolipids. Dynamic light scattering showed that larger particles were formed at pH 5 (78–190 nm) compared to pH 7 (6.5–43 nm) and 9 (5.6–28.1 nm). Moreover, nanoparticle stability (analyzed based on the zeta potential) was enhanced with the increase in pH from 5 to 9 (−29.86 ± 1.04, −37.83 ± 0.90 and −40.33 ± 0.57 mV, respectively). Field emission gun scanning electron microscopy confirmed the round morphology of the silver nanoparticles. The LSPR spectra of AgNP for the pHs studied are conserved. In conclusion, different pH values in the presence of rhamnolipids used in the synthesis of silver nanoparticles directly affect nanoparticle size and stability.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Biosciences, Rio Claro-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute for Research in Bioenergy, Rio Claro-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Chemistry, Araraquara-
Descrição: dc.descriptionFederal University of São Carlos (UFSCar) Lagoa do Sino Campus, Buri-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Biosciences, Rio Claro-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute for Research in Bioenergy, Rio Claro-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Chemistry, Araraquara-
Idioma: dc.languageen-
Relação: dc.relationColloids and Surfaces B: Biointerfaces-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBiosurfactant-
Palavras-chave: dc.subjectGlycolipid-
Palavras-chave: dc.subjectMetallic nanoparticles-
Palavras-chave: dc.subjectMicelles-
Palavras-chave: dc.subjectNanomaterials-
Palavras-chave: dc.subjectVesicles-
Título: dc.titleSilver nanoparticles stabilized by ramnolipids: Effect of pH-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.