Abstract:Zinc-doped CuO powders were obtained by microwave-assisted hydrothermal processing at 140°C for 30 min then decorated with silver by photodeposition and characterized by x-ray diffraction (XRD) analysis, field-scanning electron microscopy (SEM), and ultraviolet-visible (UV-Vis) spectroscopy region for E gap estimation. The photocatalytic activity of the powders was measured using methylene blue dye. To provide further information on the influence of the process variables on the photocatalytic activity, a 2 3 f… Show more
“…Through the FESEM images, it is also possible to notice the tendencies of the particles to grow with a hexagonal cross-section, being the most stable form of the wurtzite phase. 21,22 The chemical analysis of EDS showed results close to those obtained by the Rietveld refinement in the amount of metallic silver present in the samples, indicating that there were no considerable losses during the deposition process. EDS Chemical mapping was carried out in several areas of the sample, without showing significant variations.…”
Section: F I G U R Esupporting
confidence: 70%
“…Through the images, it can be seen that the silver nanoparticles are well dispersed over the ZnO particles, indicating that the citrate has fulfilled its role as a reducing agent in the synthesis. Through the FESEM images, it is also possible to notice the tendencies of the particles to grow with a hexagonal cross‐section, being the most stable form of the wurtzite phase 21,22 . The chemical analysis of EDS showed results close to those obtained by the Rietveld refinement in the amount of metallic silver present in the samples, indicating that there were no considerable losses during the deposition process.…”
In this work, the antimicrobial treatment of raw sewage effluents (RSE) of residences was studied. For this, the RSE was collected from a treatment plant and the antimicrobial activity was evaluated using Ag 0 decorated ZnO nanoparticles.ZnO/Ag 0 nanoparticles were synthesized by a microwave-assisted hydrothermal method and sonochemical method. The effect of ZnO/Ag 0 nanoparticles was evaluated by varying the concentration of the catalyst to the RSE, varying the amount of silver, and varying the contact time of the catalyst with the RSE, to optimize the process. The ZnO/Ag 0 nanoparticles were characterized by X-ray diffraction, surface area using the Brunauer-Emmett-Teller methodology, and field emission scanning electron microscopy. The results indicate that the particles synthesized by the association of sonochemical and hydrothermal methods provide a better antimicrobial result against all tested bacteria.The results obtained in this manuscript indicate an alternative methodology in the removal of 99% of the bacteria from tailings from a real sewer, showing its applicability in the treatment for later consumption.
“…Through the FESEM images, it is also possible to notice the tendencies of the particles to grow with a hexagonal cross-section, being the most stable form of the wurtzite phase. 21,22 The chemical analysis of EDS showed results close to those obtained by the Rietveld refinement in the amount of metallic silver present in the samples, indicating that there were no considerable losses during the deposition process. EDS Chemical mapping was carried out in several areas of the sample, without showing significant variations.…”
Section: F I G U R Esupporting
confidence: 70%
“…Through the images, it can be seen that the silver nanoparticles are well dispersed over the ZnO particles, indicating that the citrate has fulfilled its role as a reducing agent in the synthesis. Through the FESEM images, it is also possible to notice the tendencies of the particles to grow with a hexagonal cross‐section, being the most stable form of the wurtzite phase 21,22 . The chemical analysis of EDS showed results close to those obtained by the Rietveld refinement in the amount of metallic silver present in the samples, indicating that there were no considerable losses during the deposition process.…”
In this work, the antimicrobial treatment of raw sewage effluents (RSE) of residences was studied. For this, the RSE was collected from a treatment plant and the antimicrobial activity was evaluated using Ag 0 decorated ZnO nanoparticles.ZnO/Ag 0 nanoparticles were synthesized by a microwave-assisted hydrothermal method and sonochemical method. The effect of ZnO/Ag 0 nanoparticles was evaluated by varying the concentration of the catalyst to the RSE, varying the amount of silver, and varying the contact time of the catalyst with the RSE, to optimize the process. The ZnO/Ag 0 nanoparticles were characterized by X-ray diffraction, surface area using the Brunauer-Emmett-Teller methodology, and field emission scanning electron microscopy. The results indicate that the particles synthesized by the association of sonochemical and hydrothermal methods provide a better antimicrobial result against all tested bacteria.The results obtained in this manuscript indicate an alternative methodology in the removal of 99% of the bacteria from tailings from a real sewer, showing its applicability in the treatment for later consumption.
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