ZnO/Ag Nanocomposites with Enhanced Antimicrobial Activity
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Otros documentos de la autoría: González Cuadra, Jaime; Scalschi, Loredana; Vicedo, Begonya; Guc, Maxim; Izquierdo-Roca, Víctor; Porcar García, Samuel; Fraga Chiva, Diego; Carda Castelló, Juan Bautista
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comunitat-uji-handle3:10234/8639
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INVESTIGACIONMetadatos
Título
ZnO/Ag Nanocomposites with Enhanced Antimicrobial ActivityAutoría
Fecha de publicación
2022-05-02Editor
MDPIISSN
2076-3417Cita bibliográfica
Cuadra, J.G.; Scalschi, L.; Vicedo, B.; Guc, M.; Izquierdo-Roca, V.; Porcar, S.; Fraga, D.; Carda, J.B. ZnO/Ag Nanocomposites with Enhanced Antimicrobial Activity. Appl. Sci. 2022, 12, 5023. https://doi.org/10.3390/app12105023Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.mdpi.com/2076-3417/12/10/5023Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
In this study, ZnO/Ag nanocomposites were synthesized using a facile chemical route involving metallic precursors of zinc acetate dehydrate and silver acetate, and dissolving the two metallic precursors in EtOH. The ... [+]
In this study, ZnO/Ag nanocomposites were synthesized using a facile chemical route involving metallic precursors of zinc acetate dehydrate and silver acetate, and dissolving the two metallic precursors in EtOH. The final concentration of the solution was 0.4 M. The different nanocomposites were synthesized using different atomic percentages of silver to compare the amount of silver nanoparticles with the bactericidal power of the nanocomposites. They were prepared at concentrations of 0, 1, 3, 5, 7, and 10 at%. The as-prepared nanocomposites were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and scanning transmission electron microscopy (STEM) to study their structural and morphological properties. SEM showed that there is a clear effect of Ag on the size of the ZnO particles, since when silver percentages of 1 at% are included, the grain size obtained is much smaller than that of the ZnO synthesis. The effect is maintained for 3, 5, 7, and 10 at% silver. Transmission electron microscopy (TEM) compositional mapping confirms the presence of spherical nanoparticles in the synthesized samples. The size of the nanoparticles ranges from about 10 to about 30 nm. In addition, UV-Vis and Raman spectroscopy were performed to obtain structural details. The different samples show an increase in the absorption in the visible range due to the incorporation of the silver NPs. Measurement of the antimicrobial activity was tested against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) It is shown that zinc oxide has bactericidal power for these two groups of bacteria and also that when it is used together with silver NP, this effect improves, eliminating more than 90% of inoculated bacteria. [-]
Publicado en
Applied Sciences, 2022, vol. 12, no 10Entidad financiadora
Ministerio de Ciencia, Innovación y Universidades
Identificador de la entidad financiadora
http://dx.doi.org/10.13039/501100011033
Código del proyecto o subvención
MICIU/ICTI2017-2020/PID2020-116719RB-C43
Título del proyecto o subvención
Design and development of novel wide-bandgap" selective contacts and chalco-halides compounds by chemical routes compatibles with a semi-transparent based photovoltaic devices
Derechos de acceso
info:eu-repo/semantics/openAccess
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