Two-dimensional synthesis of silver nanoparticle in situ Langmuir films from the reduction of silver sulfadiazine

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorAssis, D. R.-
Autor(es): dc.creatorUeyama, V. N.-
Autor(es): dc.creatorSantos, C. C.-
Autor(es): dc.creatorDavolos, M. R.-
Autor(es): dc.creatorJafelicci, M.-
Data de aceite: dc.date.accessioned2025-08-21T22:21:38Z-
Data de disponibilização: dc.date.available2025-08-21T22:21:38Z-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2022-03-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.tsf.2022.139119-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/234127-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/234127-
Descrição: dc.descriptionTwo–dimensional (2D) arrangement of monodisperse metallic nanoparticles (NPs) has attracted attention because of the unique properties of this assembly. These properties offer new perspectives for several applications. Thin film preparation techniques involve the synthesis of NPs through chemical methods and their subsequent attachment to various substrates based on different interactions. Langmuir–Blodgett (LB) technique is a promising method, which offers possibilities of in-situ preparation of metallic NP-structured and ordered monolayer films. In this study, 2D AgNPs were synthesized in situ through the reduction of a Langmuir monolayer consisting of a mixture of silver sulfadiazine (AgSD) molecules and stearic acid (SA) surfactant at the air-water interface. Two different Ag reduction methods were used. First, a NaBH4 aqueous solution was used as the subphase to react with the mixed Langmuir monolayer films. Second, the mixed films were irradiated by an ultraviolet (UV) light source (λ = 254 nm) for different time intervals. Scanning electron microscope images, energy-dispersive X-ray spectra, and contact angle measurements show that AgSD was an efficient precursor for the synthesis of Ag NPs LB films with long-range order. A small amount of SA is sufficient to cause the arrangement of the NPs, prevent their aggregation, and provide a hydrophobic characteristic to the Ag NPs LB films. Furthermore, the chemical reduction method using NaBH4 is better than the reduction under UV light for the synthesis of Ag NPs arrangement.-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Chemistry-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Chemistry-
Idioma: dc.languageen-
Relação: dc.relationThin Solid Films-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBidimensional synthesis-
Palavras-chave: dc.subjectHydrophobic AgNP films-
Palavras-chave: dc.subjectLangmuir–Blodgett films-
Palavras-chave: dc.subjectSilver sulfadiazine-
Título: dc.titleTwo-dimensional synthesis of silver nanoparticle in situ Langmuir films from the reduction of silver sulfadiazine-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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