Potentiated Electron Transference in a-Ag2WO4 Microcrystals with Ag Nanofilaments as Microbial Agent
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Scholar |
Otros documentos de la autoría: Longo, V. M.; Foggi, Camila Cristina; Ferrer, Mateus M.; Gouveia, Amanda; André, Rafaela S.; Avansi, Waldir; Vergani, Carlos; Machado Maciel, Ana Lúcia; Andres, Juan; Cavalcante, Laécio Santos; Hernandes, Antônio C.; Longo, Elson
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7013
comunitat-uji-handle3:10234/8638
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http://dx.doi.org/10.1021/jp410564p |
Metadatos
Título
Potentiated Electron Transference in a-Ag2WO4 Microcrystals with Ag Nanofilaments as Microbial AgentAutoría
Fecha de publicación
2014-02Editor
American Chemical SocietyCita bibliográfica
LONGO, Valeria M., et al. Potentiated Electron Transference in α-Ag2WO4 Microcrystals with Ag Nanofilaments as Microbial Agent. The Journal of Physical Chemistry A, 2014, 118.31: 5769-5778.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.acs.org/doi/abs/10.1021/jp410564pVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
This study is a framework proposal for understanding the antimicrobacterial effect of both α-Ag2WO4 microcrystals (AWO) synthesized using a microwave hydrothermal (MH) method and α-Ag2WO4 microcrystals with Ag metallic ... [+]
This study is a framework proposal for understanding the antimicrobacterial effect of both α-Ag2WO4 microcrystals (AWO) synthesized using a microwave hydrothermal (MH) method and α-Ag2WO4 microcrystals with Ag metallic nanofilaments (AWO:Ag) obtained by irradiation employing an electron beam to combat against planktonic cells of methicillin-resistant Staphylococcus aureus (MRSA). These samples were characterized by X-ray diffraction (XRD), FT-Raman spectroscopy, ultraviolet visible (UV–vis) measurements, field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and high resolution transmission electron microscopy (HRTEM). The results reveal that both AWO and AWO:Ag solutions have bacteriostatic and bactericidal effects, but the irradiated sample is more efficient; i.e., a 4-fold of the MRSA planktonic cells as compared to the nonirradiated sample was observed. In addition, first principles calculations were performed to obtain structural and electronic properties of AWO and metallic Ag, which provides strong quantitative support for an antimicrobacterial mechanism based on the enhancement of electron transfer processes between α-Ag2WO4 and Ag nanoparticles. [-]
Publicado en
J. Phys. Chem. A, 2014, 118 (31)Derechos de acceso
Copyright © 2014 American Chemical Society
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