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Title:Proces sinteze nanokompozita Ni/Y2O3 z ultrazvočno razpršilno pirolizo in liofilizacijo : magistrsko delo
Authors:ID Švarc, Tilen (Author)
ID Zadravec, Matej (Mentor) More about this mentor... New window
ID Rudolf, Rebeka (Comentor)
Files:.pdf MAG_Svarc_Tilen_2022.pdf (4,98 MB)
MD5: 14E472F880A6DCA685995AC727B4B348
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:Magistrsko delo obsega proces sinteze nanokompozita Ni/Y2O3 z ultrazvočno razpršilno pirolizo in liofilizacijo, študijo vpliva tehnoloških parametrov na sestavo delcev nanokompozita Ni/Y2O3 in vpliva stabilizatorja na potek sušenja. Za karakterizacijo nanokompozita so bile uporabljene naslednje tehnike: analiza z induktivno sklopljeno plazmo z masnim spektrometrom, vrstična elektronska mikroskopija, energijsko disperzijska spektroskopija, presevna elektronska mikroskopija, CIELAB meritve barve in optična mikroskopija. Suspenzija nanokompozita je bila analizirana s pomočjo dinamičnega sipanja svetlobe. Raziskan je bil vpliv koncentracije vhodnih surovin itrijeva in nikljeva nitrata pri nespremenjenih procesnih pogojih na kemijsko sestavo in velikost delcev nanokompozita Ni/Y2O3. Ugotovljeno je bilo, da povečana koncentracija stabilizatorja v procesu ultrazvočne razpršilne pirolize vpliva na bolj homogeno porazdelitev delcev nanokompozita Ni/Y2O3 v končnem osušenem materialu. Povečanje koncentracije stabilizatorja vpliva na daljši čas sušenja v procesu liofilizacije, saj so eksperimenti potrdili, da se suspenzija delcev nanokompozita Ni/Y2O3 z nižjo koncentracijo stabilizatorja posuši bistveno hitreje.
Keywords:ultrazvočna razpršilna piroliza, liofilizacija, nanokompozit, karakterizacija
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[T. Švarc]
Year of publishing:2022
Number of pages:1 spletni vir (1 datoteka PDF (XII, 60 f.))
PID:20.500.12556/DKUM-82439 New window
UDC:620.168:620.3(043.2)
COBISS.SI-ID:120974851 New window
Publication date in DKUM:07.09.2022
Views:878
Downloads:167
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FS
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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:20.08.2022

Secondary language

Language:English
Title:Process for the synthesis of Ni/Y2O3 nanocomposites by ultrasonic spray pyrolysis and lyophilization
Abstract:The master's thesis deals with the synthesis process of Ni/Y2O3 nanocomposite by ultrasonic spray pyrolysis and lyophilization, a study of the influence of technological parameters on the composition of Ni/Y2O3 nanocomposite particles, and the influence of the stabilizer on the drying process. The following techniques were used to characterize the nanocomposite: inductively coupled plasma mass spectrometer analysis, scanning electron microscopy, energy dispersive spectroscopy, transmission electron microscopy, CIELAB colour measurements, and optical microscopy. The nanocomposite suspension was analysed by dynamic light scattering. The influence of the concentration of the input raw materials yttrium and nickel nitrate under unchanged process conditions on the chemical composition and particle size of the Ni/Y2O3 nanocomposite was investigated. It was found that the increased concentration of the stabilizer in the ultrasonic spray pyrolysis process affects a more homogeneous distribution of Ni/Y2O3 nanocomposite particles in the final dried material. An increase in the concentration of the stabilizer affects a longer drying time in the lyophilization process, as experiments confirmed that the suspension of Ni/Y2O3 nanocomposite particles with a lower concentration of the stabilizer dries significantly faster.
Keywords:ultrasonic spray pyrolysis, lyophilization, nanocomposite, characterization


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