20.500.12556/DKUM-99654 Optimizacija sinteze magnetno zeolitnih nanokompozitov za odstranjevanje mikro in nanoplastike iz vode Optimization of the synthesis of magnetic zeolite nanocomposites for the removal of micro and nanoplastics from water V diplomskem delu smo preučevali pripravo magnetno zeolitnih nanokompozitov na osnovi zeolita 4A in železovih oksidov. Namen dela je bil optimizirati in situ sintezo kompozitov ter ugotoviti, kako razmerje med zeolitom in magnetno fazo ter čas sidranja Fe3+ ionov vplivata na lastnosti nastalih materialov. Magnetno zeolitni nanokompoziti so zanimivi predvsem zaradi združevanja porozne strukture in adsorpcijskih lastnosti zeolita z možnostjo magnetnega ločevanja. Vzorce smo pripravili z metodo koprecipitacije železovih ionov v prisotnosti zeolita 4A. Pri sintezah smo spreminjali masno razmerje med zeolitom in magnetnimi delci ter čas sidranja Fe3+ ionov v zeolit. Sintetizirane vzorce smo karakterizirali s termogravimetrično analizo, Fourierjevo transformirano infrardečo spektroskopijo, dinamičnim sipanjem svetlobe, BET-analizo in vrstično elektronsko mikroskopijo. S termogravimetrično analizo smo ugotovili, da so bili vsi vzorci pri višjih temperaturah termično stabilni, pri nižjih pa je prihajalo predvsem do izgube adsorbirane vode in drugih hlapnih komponent. FTIR spektri so potrdili prisotnost zeolitnega aluminosilikatnega ogrodja in magnetne železove oksidne faze. DLS meritve so pokazale agregacijo delcev v suspenziji, BET analiza je pri izbranem vzorcu potrdila ohranjeno poroznost in relativno veliko specifično površino, SEM analiza pa je pokazala razlike v morfologiji delcev in stopnji aglomeracije. In this thesis, we investigated the preparation of magnetic zeolite nanocomposites based on zeolite 4A and iron oxides. The study aimed to optimize the in situ synthesis of the composites and to determine how the mass ratio between zeolite and the magnetic phase, as well as the anchoring time of Fe3+ ions, affects the properties of the resulting materials. Magnetic zeolite nanocomposites are of particular interest due to the combination of the porous structure and adsorption properties of zeolite with the possibility of magnetic separation. The samples were prepared using the coprecipitation method of iron ions in the presence of zeolite 4A. During the syntheses, the mass ratio between zeolite and magnetic particles and the anchoring time of Fe3+ ions with the zeolite were varied. The synthesized samples were characterized using thermogravimetric analysis, Fourier-transform infrared spectroscopy, dynamic light scattering, BET analysis and scanning electron microscopy. Thermogravimetric analysis showed that all samples were thermally stable at higher temperatures, whereas at lower temperatures, the main loss was of adsorbed water and other volatile components. The FTIR spectra confirmed the presence of the zeolitic aluminosilicate framework and the magnetic iron oxide phase. DLS measurements showed particle aggregation in the suspension, while BET analysis of the selected sample confirmed the preservation of porosity and a relatively high specific surface area, while SEM analysis revealed differences in particle morphology and the degree of agglomeration. magnetno-zeolitni nanodelci magnetni nanodelci karakterizacija optimizacija čiščenje vode magnetic-zeolitic nanoparticles magnetic nanoparticles characterization optimization water treatment true true false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-08-22 09:38:52 2026-09-24 14:27:06 2026-09-25 03:10:32 0000-00-00 00:00:00 2026 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 UN_Miklic_Aljaz_2026.pdf UN_Miklic_Aljaz_2026.pdf 1 7F8AE2A3561ACD271A002061C3DFD11E e43ee422d5a1bc2216b9655796decada1154f9bc4ef88933d7e2ca89496b7af0 f2913741-b759-11f1-a2e0-00155d0001be https://dk.um.si/Dokument.php?lang=slv&id=213307 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0