20.500.12556/DKUM-95077 Razvoj magnetno-zeolitnega nanokompozita na osnovi mikrovalovno sintetiziranih magnetnih nanodelcev diplomsko delo univerzitetnega študijskega programa I. stopnje Development of a magnetic zeolite nanocomposite based on microwave-synthesized magnetic nanoparticles V diplomskem delu je zajeta sinteza MND in magnetno-zeolitnega nanokompozita z mikrovalovno pečico, pri različnih razmerjih med zeolitom 4A in MND. Nadalje je obravnavana karakterizacija dobljenih produktov pri različnih razmerjih med zeolitom 4A in MND, in sicer 1:1, 2:1, 3:1 in 5:1. Karakterizacijo smo izvedli s Fourierjevo transformirano infrardečo spektroskopijo (FTIR), termogravimetrično analizo (TGA), dinamičnim sipanjem svetlobe (DLS), vrstično elektronsko mikroskopijo (SEM), Brunauer–Emmett–Tellerjevo metodo (BET) in vibracijskim vzorčnim magnetometrom (VSM). Rezultati kažejo, da so magnetno-zeolitni nanokompoziti bili uspešno sintetizirani z mikrovalovno metodo. FTIR in TGA potrjujeta prisotnost obeh komponent, torej zeolita 4A in MND, kjer so pri TGA opazne spremembe povezane z vezano vodo in specifični signali na FTIR spektrih za obe komponenti magnetno-zeolitnega nankompozita. Meritve velikosti delcev potrjujejo njihovo nanometrsko območje in nagnjenost k agregaciji v odvisnosti od časa. Nadalje magnetne meritve kažejo superparamagnetno obnašanje delcev, ki se zmanjšuje z večanjem količine zeolita, ki je nemagneten. Podobno je opazno tudi pri BET, kjer površina in prostornina pri razmerju med zeolitom 4A in MND 1:1 in 5:1 ob povečanem dodatku zeolita upadeta na polovico. The thesis covers the synthesis of MND and microwave magnetic zeolite nanocomposite, with different ratios between zeolite 4A and MND. Characterisation of the resulting products at different ratios of zeolite 4A to MND, namely 1:1, 2:1, 3:1 and 5:1, is discussed below. Characterisation was carried out by means of Fourier-transformed infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), dynamic light scattering (DLS), scanning electron microscopy (SEM), Brunauer-Emmett-Teller method (BET) and vibrating-sample magnetometer (VSM). The results show that the magnetic-zeolite nanocomposites have been successfully synthesized by the microwave method. The FTIR and TGA confirm the presence of both components, zeolite 4A and MND, whereas in TGA there are observable changes associated with bound water and specific peaks on the FTIR spectra for both components of the magnetic-zeolite nanocomposite. Particle size measurements confirm their nanometer range and tendency to aggregate over time. Further magnetic measurements show the superparamagnetic behavior of the particles decreasing with increasing amounts of zeolite, which is non-magnetic. Similarly, in the case of BET, the area and volume of the zeolite 4A to MND in ratio 1:1 and 5:1 are halved with increased zeolite addition. zeolit magnetni nanodelci magnetno-zeolitni nanokompozit mikrovalovna metoda in nanoplastika zeolite magnetic nanoparticles magnetic zeolite nanocomposite microwave method and nanoplastics true true false [L. L. Durič] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-09-03 21:27:09 2025-09-24 15:40:06 2025-10-31 03:22:37 0000-00-00 00:00:00 2025 0 Maribor 0 Maribor 1 spletni vir (1 datoteka PDF (VIII, 38 str.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 542.913:549.67(043.2) 255359235 UN_Duric_Lucija_Lucka_2025.pdf UN_Duric_Lucija_Lucka_2025.pdf 1 7B43A4DCF48D361F3FD2F5207B2EC06F c63806709aef046c6109d73eaff533b49edc95828c8a62df7db7a694026208f2 937c6582-991e-11f0-8bed-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=199116 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0