فاطمه سائلي كرده ده

In this research, in addition to the brief introduction of plasmonic nanoparticles and the method of synthesis of these nanoparticles, the physical principles governing the functioning of systems containing these nanoparticles have been investigated. In the following sections, various biological applications of these nanoparticles have been discussed in detail. In the following, a simple method for the synthesis of Fe@SiO2 and Fe@SiO2-Ag nanocomposite with core-shell structure is presented. The synthesized nanocomposite consists of a central iron core with a strong response to external fields, an intermediate layer of SiO2 and silver nanoparticles on its surface, and the presence of a silica layer, in addition to preventing the accumulation of zero-valent iron nanoparticles, also prevents the oxidation of the iron core. will be This method can effectively prevent the accumulation of silver nanoparticles on the silica surface, and as a result, silver nanoparticles with high dispersion and small size are formed on the silica surface. In addition, Fe@SiO2-Ag nanocomposite has high antibacterial properties due to the presence of silver and can be used as a nanoheater in medical applications. Fe@SiO2-Ag nanocomposite was synthesized with three different concentrations of silver. The physical and chemical properties of the obtained nanocomposites were investigated and eva‎luated using XRD, XRF, FTIR, MTT, TEM, FESEM, ICP, VSM and determining the antibacterial properties. According to the results of these analyses, the successful synthesis of zero-valent iron nanoparticles with silica coating and silver nanoparticles stabilized on the silica surface was confirmed. Among the synthesized samples with different concentration of silver, the optimal sample i.e. Fe.SiO2.Ag2 had good biocompatibility and high antibacterial properties, which provides an opportunity to perform combined treatment of hyperthermia based on magnetic and photonic properties.

سرطان , نانوذرات مگنتوپلاسمونيك , خاصيت پلاسمونيك , نور-گرما درماني , خاصيت آنتي باكتريال

Cancer , Magnetoplasmonic nanoparticles , Plasmonic properties , Photo-thermal therapy , Antibacterial properties

fatemeh saeli

maryam tajabadi