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master's thesis
Utjecaj neodimija na strukturu visokoentropijskih oksida
2024. urn:nbn:hr:182:515571
Milišić, Laura
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of General, Inorganic and Physical Chemistry and Methodology of Chemistry

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Milišić, L. (2024). Utjecaj neodimija na strukturu visokoentropijskih oksida (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:515571

Milišić, Laura. "Utjecaj neodimija na strukturu visokoentropijskih oksida." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2024. https://urn.nsk.hr/urn:nbn:hr:182:515571

Milišić, Laura. "Utjecaj neodimija na strukturu visokoentropijskih oksida." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2024. https://urn.nsk.hr/urn:nbn:hr:182:515571

Milišić, L. (2024). 'Utjecaj neodimija na strukturu visokoentropijskih oksida', Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 28 October 2024, https://urn.nsk.hr/urn:nbn:hr:182:515571

Milišić L. Utjecaj neodimija na strukturu visokoentropijskih oksida [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2024 [cited 2024 October 28] Available at: https://urn.nsk.hr/urn:nbn:hr:182:515571

L. Milišić, "Utjecaj neodimija na strukturu visokoentropijskih oksida", Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:182:515571

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Metadata
TitleUtjecaj neodimija na strukturu visokoentropijskih oksida
Title (english)The influence of neodymium on the structure of high-entropy oxides
AuthorLaura Milišić
MentorIgor Đerđ (mentor)
MentorAnamarija Stanković (komentor)
Committee memberElvira Kovač-Andrić (predsjednik povjerenstva)
Committee memberMartina Medvidović-Kosanović (član povjerenstva)
Committee memberAnamarija Stanković (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of General, Inorganic and Physical Chemistry and Methodology of Chemistry)
Osijek
Defense date and country2024-07-23, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Inorganic Chemistry
Abstract
Visokoentropijski oksidi (HEO) definirani su kao materijali kod kojih konfiguracijska entropija ima važnu ulogu u formiranju i stabilnosti prilikom nastanka jednofaznog spoja. Izgrađeni su od minimalno pet elemenata koji dijele kationsko mjesto u kristalnoj rešetki. U ovom radu su sintetizirana četiri spoja visokoentropijskih oksida u osnovi cerijevog dioksida te je istražen utjecaj množinskog udjela neodimija na strukturna i katalitička svojstva HEO. Spojevi su sintetizirani koristeći modificiranu sol-gel sintezu. Dobiveni spojevi su karakterizirani putem rentgenske difrakcije u prahu, određivanjem termičke stabilnosti te analizom površine i optičkih svojstava. Sintetiziranim HEO spojevima je potvrđena fotokatalitička aktivnost na razgradnju organskih bojila metilensko modrilo i rodamin B te je uspoređena s vrijednostima katalitičke aktivnosti cerijevog dioksida. Dokazano je kako HEO spojevi imaju modificirana strukturna, površinska i optička svojstva te poboljšanu katalitičku aktivnost u odnosu na cerijev dioksid.
Abstract (english)
High-entropy oxides (HEO) are defined as materials where configurational entropy plays an important role in the formation and stability of a single-phase compound. They are built from a minimum of five elements that share a cation site in the crystal lattice. In this work, four compounds of high-entropy oxides based on ceria were synthesized, and the influence of the molar ratio of neodymium on the structural and catalytic properties of HEO was investigated. The compounds were synthesized using a modified sol-gel synthesis. The obtained compounds were characterized by X-ray powder diffraction, determination of thermal stability and analysis of surface and optical properties. The photocatalytic activity for the degradation of organic dyes methylene blue and rhodamine B was confirmed by the synthesized HEO compounds and was compared with the values of the catalytic activity of pure ceria. It has been proven that HEO compounds have modified structural, surface and optical properties and improved catalytic activity compared to pure ceria.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:515571
Study programmeTitle: University Graduate Study of Chemistry; Research Program; specializations in: Research Program
Course: Research Program
Study programme type: university
Study level: graduate
Academic / professional title: sveučilišni/a magistar/magistra kemije (sveučilišni/a magistar/magistra kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2024-08-27 08:17:58