20.500.12556/DKUM-16511 POSTOPKI SINTEZE NANODELCEV Cu-Ni Z RAZLIČNIMI SESTAVAMI SYNTHESIS OF Cu-Ni NANOPARTICLES OF VARYING COMPOSITIONS Namen diplomskega dela je bil ugotoviti, s katerim načinom sinteze lahko sintetiziramo magnetne nanodelce CuNi z ustrezno sestavo za nadaljnjo uporabo pri pripravi magnetnih tekočin, ki bi bile primerne za uporabo pri magnetni hipertermiji. S pomočjo rentgenske praškovne difrakcije (RPD) smo karakterizirali velikost nastalih nanodelcev zlitine in določili faze v vzorcih. Fizikalne lastnosti vzorcev (izgubo mase) smo, pri kontroliranem segrevanju, določili s termogravimetrično analizo (TGA). Magnetne lastnosti nastalih nanodelcev smo izmerili z suscepto-magnetometrom DSM — 10. Na koncu smo preučili še morfologijo delcev s transmisijskim elektronskim mikroskopom (TEM). Rezultati so pokazali, da je najprimernejša metoda za sintezo magnetnih nanodelcev CuNi z različnimi sestavami mehanokemijska metoda. Sintetizirani delci so kazali močne magnetne lastnosti. Čas mletja vpliva na velikost nastalih nanodelcev in stopnjo zreagiranosti reaktantov. The aim of this work was to determine, which way of synthesis is the most succesful for preparation of magnetic nanoparticles CuNi with suitable composition for further preparation of magnetic fluids, which can be used in magnetic hyperthermia. The size of magnetic nanoparticles was estimated with Scherrer equation. Samples were characterized with XRD analysis. Physical properties (loss of weight) of the samples were, during controlled heating, measured with termogravimetric analysis (TGA). Magnetic properties of the samples were measured with DSM – 10 magnetometer. At the end we studied morphology of the synthesized nanoparticles with transmission electronic microscope (TEM). The results showed that the most suitable method of synthesis of magnetic nanoparticles CuNi with varying composition is mechanochemical method. Synthesized nanoparticles were strongly magnetic. Time of milling has effect on size of synthesized nanoparticles. magnetni nanodelci magnetna hipertermija rentgenska praškovna difrakcija transmisijska elektronska mikroskopija termogravimetrična analiza magnetic nanoparticles magnetic hyperthermia X-ray diffraction transmission electron microscopy termogravimetric analysis true true false [P. Jenuš] Slovenski jezik Angleški jezik Diplomsko delo 2010-10-25 10:05:22 2010-10-26 10:32:44 2022-04-13 08:13:37 2023-12-20 03:36:51 2010 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.3:66.091.3-034.3(043.2) 14580758 URN:SI:UM:DK:YXJBGDXT UNI_Jenus_Petra_2010.pdf UNI_Jenus_Petra_2010.pdf 1 B57D2A8788DD32A263059FBF6A8BF5A8 5a2a5fc846427c15bfeb27c160baaf2d223a8263d06091c4c94cccf7c9f17ea3 aa0e78bb-7c04-11eb-bb7a-00155d0001ca 20.500.12556/dkum/5f0994da-9aa9-4ea6-a3cc-6e87a21ee485 https://dk.um.si/Dokument.php?lang=slv&id=18778 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0