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master's thesis
Mehanokemijska sinteza nanočestica ZnO dopiranog kadmijem
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2018. urn:nbn:hr:149:279789
Munda, Ivana Katarina
University of Zagreb
Faculty of Chemical Engineering and Technology

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

Cite this document

Munda, I. K. (2018). Mehanokemijska sinteza nanočestica ZnO dopiranog kadmijem (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:279789

Munda, Ivana Katarina. "Mehanokemijska sinteza nanočestica ZnO dopiranog kadmijem." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:149:279789

Munda, Ivana Katarina. "Mehanokemijska sinteza nanočestica ZnO dopiranog kadmijem." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:149:279789

Munda, I. K. (2018). 'Mehanokemijska sinteza nanočestica ZnO dopiranog kadmijem', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 09 June 2024, https://urn.nsk.hr/urn:nbn:hr:149:279789

Munda IK. Mehanokemijska sinteza nanočestica ZnO dopiranog kadmijem [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2018 [cited 2024 June 09] Available at: https://urn.nsk.hr/urn:nbn:hr:149:279789

I. K. Munda, "Mehanokemijska sinteza nanočestica ZnO dopiranog kadmijem", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:149:279789

Metadata
TitleMehanokemijska sinteza nanočestica ZnO dopiranog kadmijem
Title (english)Mechanochemical synthesis of Cd-doped ZnO nanoparticles
AuthorIvana Katarina Munda
MentorStanislav Kurajica (mentor)
Committee memberStanislav Kurajica (predsjednik povjerenstva)
Committee memberVilko Mandić (član povjerenstva)
Committee memberGordana Matijašić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2018-07-11, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Basic Technical Sciences
Materials
Abstract
Istraživano je koliki se udio kadmija može ugraditi u kristalnu rešetku cinkita mehanokemijskom sintezom. Kao prekursori su korišteni metalni kloridi i natrijev karbonat dok je natrijev klorid korišten kao razrjeđivač. Nakon mehanokemijske sinteze uzorci su termički obrađeni pri 600 °C u trajanju 2 sata kako bi se iz ZnCO3 dobio ZnO. Pripremljeni uzorci ispitani su rendgenskom difrakcijom praha (XRD), infracrvenom spektroskopijom s Fourierovom transformacijom tehnikom prigušene totalne refleksije (FTIR-ATR), UV-Vis difuznom refleksijskom spektroskopijom (DRS), elektronskim pretražnim mikroskopom (SEM) i energetski razlučujućom rendgenskom spektroskopijom (EDS). Fotokatalitička učinkovitost vrednovana je na temelju procesa razgradnje organske boje metilenskog plavila (MB), praćenog UV-VIS spektroskopijom. Rezultati su pokazali da je mehanokemijskom sintezom iz korištenih prekursora u rešetku cinkita moguće ugraditi do 2 % kadmija, te da se pri većim udjelima kadmija osim cinkita pojavljuju i druge faze poput kadmijeva oksida i kadmijeva karbonata. Dopiranjem cinkita kadmijem dovodi do pojave većih kristalita ZnO. Dopiranjem kadmijem ne postižu se veće promjene u morfologiji, energiji zabranjene zone niti fotokatalitičkoj aktivnosti ZnO.
Abstract (english)
The limit of zincite crystal lattice doping with cadmium in the course of mechanochemical synthesis has been investigated. Metal chlorides and sodium carbonate were used as precursors and sodium chloride as diluent. After mechanochemical synthesis samples were thermally treated at 600 °C for 2 h, in order to enable transformation of ZnCO3 to ZnO. The prepared samples were characterized by X-ray diffraction (XRD), Attenuated total reflectance Fourier-transformed infrared spectroscopy (FTIR-ATR), UV–Vis diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). Photocatalytic efficiency has been evaluated through methylene blue (MB) dye degradation process via UV-Vis spectroscopy. The results showed that limit of Zn replacement with Cd in ZnO crystal lattice via mechanochemical synthesis with precursors used is only 2 %. In a presence of larger share of Cd, cadmium oxide or carbonate phases appears. It was noted that doping with Cd impair ZnO nanocrystallinity. No significant differences of ZnO band-gap, morphology and photocatalytic activity with doping were observed.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:279789
Study programmeTitle: Materials Science and Engineering - Graduate study
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-05-26 13:30:32