Comparison of Bactericidal Properties of ZnO Nanoparticles Obtained By Two Synthesis Methods

Sara Cordova, Maribel Guzman, Betty C. Galarreta, Yulan Hernandez, Oscar Chumpitaz, Santiago Flores, Loïc Malet, Stéphane Godet

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Resumen

The potential bactericidal properties of nanosized zinc oxide (ZnO) make this semiconductor suitable for medical and pharmaceutical applications. In this article we present two methods of synthesis of ZnO nanoparticles (Nps-ZnO): chemical precipitation and solution combustion synthesis. The synthesized nanopowders were characterized with Scanning Electron Microscopy-Energy Dispersive X-Ray Spectroscopy (SEM-EDS), X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM). The EDS analysis indicate a Zn:O atomic ratio of 0.81 and 1.36, for the chemical precipitation and solution combustion synthesis, respectively. The XRD results confirm that Nps-ZnO obtained by both methods show a hexagonal arrangement (Wurtzite). TEM images show nanoparticles with mean diameters between 15.5 ± 6.8 nm and 73.4 ± 6.0 nm. Finally, the Kirby−Bauer disk diffusion method for the determination of antibacterial activity shows that Escherichia coli was more sensitive to the antimicrobial action of Nps-ZnO obtained by chemical precipitation than the Bacillus Subtilis bacteria.

Idioma originalInglés
Título de la publicación alojadaProceedings of the 9th World Congress on Recent Advances in Nanotechnology, RAN 2024
EditoresWolfgang Ensinger, Josef Jampilek, Sergio Nardini, Dimitrios Papageorgiou
EditorialAvestia Publishing
ISBN (versión impresa)9781990800337
DOI
EstadoPublicada - 2024
Evento9th World Congress on Recent Advances in Nanotechnology, RAN 2024 - London, Reino Unido
Duración: 8 abr. 202410 abr. 2024

Serie de la publicación

NombreWorld Congress on Recent Advances in Nanotechnology
ISSN (versión digital)2371-5308

Conferencia

Conferencia9th World Congress on Recent Advances in Nanotechnology, RAN 2024
País/TerritorioReino Unido
CiudadLondon
Período8/04/2410/04/24

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