![]() (EDX), transmission electron microscope (TEM), and cyclic voltammetry techniques. Nanoparticles were synthesized via chemical method.Ĭharacterizing the CoFe2O4 was investigated by field emission scanningĮlectron microscopy (FESEM), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy Magnetic nanoparticles modified glassy carbon electrode (CoFe2O4/GCE) was developed forĮlectrochemical determination of methyldopa in the presence of uric acid. In this work, a promising electrochemical sensor based on CoFe2O4 Therefore, the determination of methyldopa in the presence of other biologicalĬomponents is essential. Methyldopa is one of the medications that is used for the treatment The final material was analyzed by X-ray diffraction (XRD), electronic scanning microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), high resolution transmission electron microscopy (HRTEM) and vibrating sample magnetometer (VSM). The ratio of the metal ions: Y:Ba:Cu was 1:2:3, and between the oxidant and the reducing agent was used a citrate / nitrate mass ratio equal with 0.7. To obtain YBa2Cu3O7-�- coated magnetic nanoparticles by autocombustion reaction the solutions of nitrates and citric acid were used. The suspension with cobalt ferrite nanoparticles was obtained by co-precipitation method. To obtain this core-shell material, the solutions of the nitrates were first obtained by dissolving the salts in demineralised water. The advantages of such material aim the selective deposition of nanofilms oriented in magnetic fields. In this paper we describe the synthesis of a core-shell material using yttrium superconducting ceramic material (YBCO) and cobalt ferrite nanoparticles in order to obtain a nanostructured material with magnetic properties. coli in water samples with remaining bacteria below 1% of the initial concentration during the experiment time (30 min for laboratory tests and 1.5 h for pilot plant tests). Results confirm the photocatalytic elimination of E. Using the disk diffusion technique, it was obtained inhibition zones of (17 ± 2) mm diameter. The results showed that cobalt ferrite nanoparticles have an average diameter of (36 ± 20) nm and the X-ray diffraction pattern shows a cubic spinel structure. coli) strain ATCC 22922 was used as model bacteria for contact biocidal analysis carried out by disk diffusion method and photocatalysis under an ultraviolet A (UV-A) lamp for laboratory analysis and solar radiation (radiation below 350 W/m2 in a typical cloudy day) for the pilot plant analysis. The obtained nanoparticles were characterized by X-ray diffraction, scanning and transmission electron microscopy. Cobalt ferrite nanoparticles were prepared using Co(II) and Fe(II) salts as precursors and cetyltrimethyl ammonium bromide as a surfactant. This paper focuses on the synthesis of cobalt ferrite nanoparticles by the sol–gel method and their photocatalytic activity to eliminate bacteria in aqueous media at two different scales: in a laboratory reactor and a solar pilot plant. ![]()
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