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undergraduate thesis
Ultrazvučna sinteza anorganskih oksida
2023. urn:nbn:hr:182:940080
Rukavina, Domagoj
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of General, Inorganic and Physical Chemistry and Methodology of Chemistry

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Rukavina, D. (2023). Ultrazvučna sinteza anorganskih oksida (Undergraduate thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:940080

Rukavina, Domagoj. "Ultrazvučna sinteza anorganskih oksida." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2023. https://urn.nsk.hr/urn:nbn:hr:182:940080

Rukavina, Domagoj. "Ultrazvučna sinteza anorganskih oksida." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2023. https://urn.nsk.hr/urn:nbn:hr:182:940080

Rukavina, D. (2023). 'Ultrazvučna sinteza anorganskih oksida', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 02 February 2025, https://urn.nsk.hr/urn:nbn:hr:182:940080

Rukavina D. Ultrazvučna sinteza anorganskih oksida [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2023 [cited 2025 February 02] Available at: https://urn.nsk.hr/urn:nbn:hr:182:940080

D. Rukavina, "Ultrazvučna sinteza anorganskih oksida", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:182:940080

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Metadata
TitleUltrazvučna sinteza anorganskih oksida
Title (english)Ultrasonic synthesis of inorganic oxides
AuthorDomagoj Rukavina
MentorElvira Kovač-Andrić (mentor)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of General, Inorganic and Physical Chemistry and Methodology of Chemistry)
Osijek
Defense date and country2023-09-28, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Inorganic Chemistry
Abstract
Posljednjih nekoliko desetljeća povećala se zainteresiranost istraživanja u području sinteze i primjene nanočestica . Razlog tomu je mala veličina čestica i njihova velika reaktivnost zbog velike specifične površine. Ultrazvučna sinteza je jedna od načina sinteze nanočestica pri čemu se koriste ultrazvučni valovi te se procesom kavitacije stvaraju visoka temperatura i tlak. U ovom radu opisana je i korištena ultrazvučna sinteza anorganskih oksida iz smjese vodenih otopina L-histidina, niklovog(II) nitrata heksahidrata i natrijevog hidroksida. U literaturnom dijelu opisani su pojmovi zvuka, ultrazvuka, kavitacije i optičkog energijskog procijepa. Metode koje su korištene za analizu spojeva dobivenih ovom sintezom su UV/VIS i infracrvena (IR) spektroskopija te termogravimetrijska analiza (TGA). U eksperimentalnom dijelu prikazan je postupak ultrazvučne sinteze i analiza rezultata. Utvrđeno je nastajanje NiO i Ni(OH)2. Taucovom metodom izračunata je energija indirektnog i direktnog optičkog energijskog procijepa koji ukazuje da je nastali anorganski oksid poluvodič.
Abstract (english)
In the last few decades, the interest in research in the area of nanoparticle synthesis and application has increased. The reason for this is the small size of the particles and their high reactivity due to their large surface area. Ultrasonic synthesis is one of the ways of nanoparticle synthesis, where ultrasonic waves are used, and high temperature and pressure are created through the cavitation process. In this paper, the ultrasonic synthesis of inorganic oxides was described and used from a mixture of aqueous solutions of L-histidine, nickel(II) nitrate hexahydrate, and sodium hydroxide. The literature section describes the concepts of sound, ultrasound, cavitation and optical band gap. The methods used to analyze the compounds obtained from the synthesis are UV/VIS and infrared (IR) spectroscopy and thermogravimetric analysis (TGA). In the experimental part, the ultrasonic synthesis procedure and the analysis of the results are presented. The formation of NiO and Ni(OH)2 was determined. Using the Tauc method, the values of indirect and direct band gaps were calculated, indicating that the formed inorganic oxide is a semiconductor.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:940080
Study programmeTitle: University Undergraduate Study program Chemistry
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2023-11-10 08:41:18