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Title:SINTEZA NANODELCEV CrNi Z MIKROEMULZIJSKO METODO
Authors:ID Markuš, Sabina (Author)
ID Ban, Irena (Mentor) More about this mentor... New window
ID Drofenik, Miha (Comentor)
Files:.pdf UNI_Markus_Sabina_2012.pdf (2,16 MB)
MD5: 55FF439D876B8CFECFB3FD8666497810
PID: 20.500.12556/dkum/cc7b4be0-d8f6-4a66-aeef-7ea41428dca3
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Namen diplomskega dela je bil sinteza nanodelcev CrNi z mikroemulzijsko metodo. V območju stabilnosti mikroemulzij v ternarnem diagramu (voda/CTAB, n-butanol/izooktan) smo izbrali dve točki z različnimi masnimi deleži (20/40/40 in 20/50/30) in v teh dveh točkah sintetizirali CrNi magnetne nanodelce z različnimi sestavami: Cr1-xNix (x=0.7, 0.8, 0.9), pri čemer smo kot reducent uporabili NaBH4. Delce smo najprej termično obdelali s pomočjo termoanaliznega sistema TGA-SDTA v N2 atmosferi pri 500 ° C z namenom njihove homogenizacije. Zaradi možne aplikacije v medicinske namene (magnetna hipertermija) smo želeli pridobiti delce z ustrezno Curiejevo temperaturo. Delce smo v ta namen še dodatno homogenizirali v cevni peči pri temperaturi 900°C, 12 ur, v redukcijski atmosferi (Ar/H2). S tem smo hkrati želeli preprečiti oksidacijo delcev. Vzorce smo kvalitativno analizirali z rentgensko praškovno difrakcijo (XRD). S pomočjo termogravimetrične analize (TGA) smo vzorce segreli na 500 °C in jim s prirejeno TGA aparaturo določili Curiejevo temperaturo (Tc).
Keywords:mikroemulzija, magnetni nanodelci, Curiejeva temperatura, termična obdelava, rentgenska praškovna difrakcija
Place of publishing:Maribor
Publisher:[S. Markuš]
Year of publishing:2012
PID:20.500.12556/DKUM-37794 New window
UDC:54.057:[620.3:546.72](043.2)
COBISS.SI-ID:16607254 New window
NUK URN:URN:SI:UM:DK:OFBDY3YE
Publication date in DKUM:11.09.2012
Views:2989
Downloads:257
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Secondary language

Language:English
Title:SYNTHESIS OF CrNi NANOPARTICLES WITH MICROEMULSION METHOD
Abstract:Diploma work focuses on synthesis of nanoparticles CrNi with microemulsion method. We prepared two different compositions of microemulsions in the region of microemulsion stability with mass % (20/40/40 and 20/50/30) in ternary water/CTAB, n-butanol/isooctane diagram. In those two compositions we synthesized CrNi magnetic nanoparticles of different alloy compositions: Cr1-xNix whereas (x = 07, 08 and 09). The reducing agent was NaBH4. The particles were first thermal treated with the TGA-SDTA thermoanalytical system in N2 at 500°C because of homogenization. Because of the application for medical purposes (magnetic hyperthermia) we tried to get the particles with appropriate Curie temperature. So, we additionally homogenised particles in a tube furnace at 900°C for 12 hours under reducing atmosphere (Ar/H2). With that, we tried to prevent the particles from oxidation. A qualitative analysis of the samples was carried out using the X-ray diffraction (XRD) and the Curie temperature measured with thermogravimetric analysis (TGA) which was also used to heat the samples to 500°C.
Keywords:microemulsion, magnetic nanoparticles, Curie temperature, thermal treatment, powder x-ray diffraction


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