diplomsko delo univerzitetnega študijskega programa I. stopnje
Nika Petelinšek (Author), Irena Ban (Mentor), Sašo Gyergyek (Co-mentor)

Abstract

V diplomskem delu smo se posvetili sintezi nanodelcev Mg1+xFe2-2xTixO4 z metodo termičnega razkroja prekurzorskih molekul. Omenjeni nanodelci so primerni za uporabo v temperaturno samoregulativni magnetni hipertermiji in s to metodo še niso bili sintetizirani. S spreminjanjem sestave magnezijevega ferita z vgrajenim titanom lahko vplivamo na njegovo Curiejevo temperaturo. Sinteza s termičnim razkrojem ima pred ostalimi uveljavljenimi metodami pridobivanja nanodelcev to prednost, da omogoča kontrolirano sintezo ustrezno majhnih monodisperznih delcev. Cilj tega dela je bil sintetizirati in okarakterizirati nanodelce Mg1+xFe2-2xTixO4, kjer je x = 0,37, saj so nanodelci s to sestavo v prejšnjih študijah izkazovali ustrezne magnetne lastnosti za uporabo v hipertermiji. Pri sintezi z metodo termičnega razkroja smo uporabili kovinske acetilacetonate kot prekurzorje. Sinteze smo izvajali pri temperaturah 280 °C in 320 °C. Presevna elektronska mikroskopija z elementno analizo je pokazala, da smo pridobili nanodelce magnezijevega ferita, majhne velikosti (8-13) nm in z ozko porazdelitvijo. Vendar pa v materialu ni bilo vgrajenega titana. Na podlagi termične analize prekurzorjev smo ugotovili, da je titanov prekurzor pri pogojih sinteze termično stabilen in razpada pri znatno višji temperaturi kot magnezijev in železov prekurzor. Tako se titan pri uporabljenih pogojih sinteze ne more vgraditi v delce.

Keywords

nanodelci;magnetna hipertermija;magnezijev titanov ferit;Curiejeva temperatura;termični razkroj;diplomske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher: [N. Petelinšek]
UDC: 620.3:665.584.24(043.2)
COBISS: 24530947 Link will open in a new window
Views: 585
Downloads: 149
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Other data

Secondary language: English
Secondary title: Thermal Decomposition Synthesis of Mg1+xFe2-2xTixO4 Nanoparticles
Secondary abstract: In the diploma work, we focused on the synthesis of Mg1+xFe2-2xTixO4 nanoparticles with thermal decomposition method of precursor molecules. Such nanoparticles are suitable for the use in temperature self-regulating magnetic hyperthermia and have not yet been synthesized with this method. When changing the composition of magnesium ferrite with incorporated titanium, we can tune its Curie temperature. The thermal decomposition method has several advantages over other common methods for the synthesis of nanoparticles, such as small size and monodispersity of obtained particles. The aim of this work was to synthesize and characterize Mg1+xFe2-2xTixO4 nanoparticles, where x = 0,37, since the particles of this composition have been shown to exhibit properties suitable for the use in hyperthermia. For thermal decomposition synthesis, we used metal acetylacetonates as precursors. Syntheses were carried out at temperatures of 280 °C and 320 °C. Transmission electron microscopy with the elemental analysis has shown that we obtained monodisperse magnesium ferrite nanoparticles of small size (8-13 nm). However, no titanium was incorporated in the material. Based on the thermal analysis of precursors, we suggest that titanium precursor is stable at the conditions of synthesis and decomposes at a significantly higher temperature than magnesium and iron precursor. Therefore, titanium cannot be incorporated in the structure at applied conditions of synthesis.
Secondary keywords: nanoparticles;magnetic hyperthermia;magnesium titanium ferrite;Curie temperature;thermal decomposition;
Type (COBISS): Bachelor thesis/paper
Thesis comment: Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages: X, 42 str.
ID: 11861730