Utjecaj metode kemijske sinteze na svojstva nanostrukturnih oksida cinka

Šajnović, Ivan

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master's thesis

Utjecaj metode kemijske sinteze na svojstva nanostrukturnih oksida cinka

Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2018. urn:nbn:hr:149:093336

Šajnović, Ivan

University of Zagreb
Faculty of Chemical Engineering and Technology

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APA 6th Edition

Šajnović, I. (2018). Utjecaj metode kemijske sinteze na svojstva nanostrukturnih oksida cinka (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:093336

MLA 8th Edition

Šajnović, Ivan. "Utjecaj metode kemijske sinteze na svojstva nanostrukturnih oksida cinka." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:149:093336

Chicago 17th Edition

Harvard

Šajnović, I. (2018). 'Utjecaj metode kemijske sinteze na svojstva nanostrukturnih oksida cinka', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 16 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:093336

Vancouver

Šajnović I. Utjecaj metode kemijske sinteze na svojstva nanostrukturnih oksida cinka [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2018 [cited 2024 November 16] Available at: https://urn.nsk.hr/urn:nbn:hr:149:093336

IEEE

I. Šajnović, "Utjecaj metode kemijske sinteze na svojstva nanostrukturnih oksida cinka", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:149:093336

Cite this item: https://urn.nsk.hr/urn:nbn:hr:149:093336

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Title	Utjecaj metode kemijske sinteze na svojstva nanostrukturnih oksida cinka
Title (english)	The influence of synthesis method on the properties of nanostructured zinc oxides
Author	Ivan Šajnović
Mentor	Marijana Kraljić Roković (mentor)
Committee member	Marijana Kraljić Roković (predsjednik povjerenstva)
Committee member	Suzana Sopčić (član povjerenstva)
Committee member	Željka Petrović (član povjerenstva)
Granter	University of Zagreb Faculty of Chemical Engineering and Technology Zagreb
Defense date and country	2018-07-13, Croatia
Scientific / art field, discipline and subdiscipline	NATURAL SCIENCES Chemistry Applied Chemistry
Abstract	Istraživanja provedena u ovom radu bila su usmjerena na studij morfoloških, strukturnih, optičkih i poluvodičkih karakteristika čestica ZnO. Studiran je utjecaj procesa dopiranja – ugradnje kationa prijelaznog metala (Fe3+ iona) na navedene karakteristike ZnO. Dopirane čestice ZnO sintetizirane su pri atomskim udjelima Fe3+ iona od 0,5; 1 i 5 %. Hidrotermički postupak odabran je kao jednostavan, reproducibilan i ekološki prihvatljiv postupak sinteze čestica ZnO u dva različita lužnata medija, NH4OH i NaOH. Karakterizacija uzoraka provedena je sljedećim mjernim tehnikama: infracrvenom spektroskopijom (FT-IR), ultraljubičastom/vidljivom spektroskopijom (UV/Vis), pretražnom mikroskopijom s emisijom elektrona s pomoću polja (FE-SEM), energijski razlučujućom rendgenskom spektrometrijom (EDS) te rendgenskom difrakcijom (XRD). Rezultati svih tehnika potvdili su uspješnu ugradnju Fe3+ iona u kristalnu rešetku ZnO. Prema EDS rezultatima ugradnja Fe3+ iona odvija se do 1 at.%. Koncentracija Fe3+ primjesa ima značajan utjecaj, prema svim rezultatima, na morfološka, strukturna, optička i poluvodička svojstva ZnO. Utjecaj lužine na mehanizam kristalizacije nedopiranih i dopiranih čestica ZnO također je vidljiv iz dobivenih rezultata.
Abstract (english)	Morphological, structural, optical, and semiconducting properties of ZnO particles have been investigated in this work. The influence of Fe3+ doping on mentioned characteristics was in the focus of investigations. Iron doped ZnO samples were prepared by varying the Fe3+ concentration in the range from 0,5 to 5 at.%. The hydrothermal route has been chosen as a simple, reproducible and environmental friendly synthesis procedure of ZnO formation in NH4OH and NaOH media. The samples were characterized by following techniques: infrared spectroscopy (FT-IR), ultraviolet/visible spectroscopy (UV/Vis), field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectrometry (EDS), and X-ray diffraction (XRD). The results of all techniques have confirmed the incorporation of Fe 3+ ions in the ZnO crystal lattice. According to the EDS results maximum amount of incorporated Fe3+ ions is 1 at.%. The Fe3+ dopant concentration has been correlated with morphological, structural, optical, and semiconducting properties of ZnO. The influence of synthesis medium (NH4OH and NaOH) on the crystallization mechanism is also evident from obtained results.
Keywords
Keywords (english)
Language	croatian
URN:NBN	urn:nbn:hr:149:093336
Study programme	Title: Applied Chemistry - Graduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry Course: Advanced materials and technologies Study programme type: university Study level: graduate Academic / professional title: magistar/magistra primijenjene kemije (magistar/magistra primijenjene kemije)
Type of resource	Text
File origin	Born digital
Access conditions	Open access
Terms of use
Repository	Repository of Faculty of Chemical Engineering and Technology University of Zagreb
Created on	2020-07-21 11:40:08