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Title:Pridobivanje nanodelcev Mg1+xFe2-2xTixO4 s termičnim razkrojem : diplomsko delo univerzitetnega študijskega programa I. stopnje
Authors:ID Petelinšek, Nika (Author)
ID Ban, Irena (Mentor) More about this mentor... New window
ID Gyergyek, Sašo (Comentor)
Files:.pdf UN_Petelinsek_Nika_2020.pdf (1,98 MB)
MD5: 5DC276218ECE01118EDAA9618E1BEFAC
PID: 20.500.12556/dkum/21776a66-aa93-41c7-85e7-a817bd40c0b0
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
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
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[R. Gole]
Year of publishing:2020
Number of pages:X, 42 str.
PID:20.500.12556/DKUM-76717 New window
UDC:620.3:665.584.24(043.2)
COBISS.SI-ID:24530947 New window
NUK URN:URN:SI:UM:DK:QJQG1F9L
Publication date in DKUM:20.07.2020
Views:1418
Downloads:197
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:24.06.2020

Secondary language

Language:English
Title:Thermal Decomposition Synthesis of Mg1+xFe2-2xTixO4 Nanoparticles
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.
Keywords:nanoparticles, magnetic hyperthermia, magnesium titanium ferrite, Curie temperature, thermal decomposition


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