Sekundarni povzetek: |
In this diploma work, we addressed the problematics of nanoparticle synthesis, specifically synthesis of nanoparticles with a lower Curie temperature (TC), that would be, in an idealized case, somewhere in the narrow therapeutic temperature range, 41 °C – 46 °C.
Reverse microemulsion method was used, with a composition ratio of 60:30:10 (isooctane : (CTAB+1-butanol) : aqueous phase of dissolved magnesium, iron and titanium salts) in the ternary phase diagram. Ammonia solution was used for the precipitation of hidroxides. The goal was to synthesize nanoparticles, with a composition of Mg1+xFe2-2xTixO4, where x= 0.37.
After the synthesis, the nanoparticles were cleaned using ethanol and water in the ultrasonic bath. Finally, after centrifugation the samples were calcined in air at various temperatures.
For the characterisation of synthesized nanoparticles, we used thermoanalytical system TGA/SDTA, with temperatures up to 1000 °C. With small modifications, the same equipment was used for determining TC. For further analysis, we used X-Ray powder diffraction (XRD). |