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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

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

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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

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

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

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 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:093336

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 22] Available at: https://urn.nsk.hr/urn:nbn:hr:149:093336

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

Metadata
TitleUtjecaj metode kemijske sinteze na svojstva nanostrukturnih oksida cinka
Title (english)The influence of synthesis method on the properties of nanostructured zinc oxides
AuthorIvan Šajnović
MentorMarijana Kraljić Roković (mentor)
Committee memberMarijana Kraljić Roković (predsjednik povjerenstva)
Committee memberSuzana Sopčić (član povjerenstva)
Committee memberŽeljka Petrović (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2018-07-13, 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)
Languagecroatian
URN:NBNurn:nbn:hr:149:093336
Study programmeTitle: 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 resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-07-21 11:40:08