20.500.12556/DKUM-74291 Sinteza Mg1+xFe2-2xTixO4 nanodelcev z mikroemulzijsko tehniko diplomsko delo univerzitetnega študijskega programa I. stopnje Synthesis of Mg1+xFe2-2xTixO4 nanoparticles using reverse microemulsion method V tem diplomskem delu smo se ukvarjali s problematiko sinteze nanodelcev, specifično s sintezo nanodelcev z ustrezno Curiejevo temperaturo (TC), ki je v idealnem primeru v območju terapevtske temperature, 41 °C – 46 °C. Za sintezo smo uporabili mikroemulzijsko tehniko, s sestavo 60:30:10 (izooktan : (CTAB+1-butanol) : vodna faza raztopljenih magnezijevih, železovih in titanovih soli) v ternarnem diagramu. Za obarjanje hidroksidov smo uporabili raztopino amoniaka. Naš cilj je bil sintetizirati nanodelce s sestavo Mg1+xFe2-2xTixO4, pri čemer smo izbrali x = 0.37. Po sintezi smo nanodelce čistili z etanolom in nato z vodo v ultrazvočni kopeli. Po posedanju delcev v centrifugi je sledila kalcinacija na zraku pri izbrani temperaturi. Sintetizirane delce smo analizirali s termoanalitskim sistemom TGA/SDTA v območju od 25 °C do 1000 °C ter jim na modificirani aparaturi določili tudi TC. Sledila je nadaljnja analiza z rentgensko praškovno difraktometrijo (RTG). 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). magnetni nanodelci mikroemulzija magnetna hipertermija magnezij titan ferit magnetic nanoparticles microemulsion magnetic hyperthermia magnesium titanium ferrite true true false [R. Gole] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2019-08-21 19:14:55 2019-09-11 17:46:15 2022-08-09 08:35:03 2019-10-16 03:20:24 2019 0 Maribor 0 Maribor X, 42 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.3:665.584.24(043.2) 22625046 URN:SI:UM:DK:H7THKOS4 UN_Gole_Rene_2019.pdf UN_Gole_Rene_2019.pdf 1 C0D755664C9AC60C1DF7B149DF5BE89B 9477de35be62658848576c4ff7a40dc6222ab756ccbbc481c595f511dce7d394 d50dbc17-7c10-11eb-bb7a-00155d0001ca 20.500.12556/dkum/ceb7be60-e5d5-4a40-bb63-0f6b9e7106ec https://dk.um.si/Dokument.php?lang=slv&id=136080 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0