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master's thesis
Karakterizacija nanočestica željeza pri sorpciji odabranih lantanoida pretražnom mikroskopijom
Zagreb: University of Zagreb, Faculty of Science, 2022. urn:nbn:hr:217:248157
Beljan, Nikolina
University of Zagreb
Faculty of Science
Department of Chemistry

Institutional repository: Repository of the Faculty of Science

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Beljan, N. (2022). Karakterizacija nanočestica željeza pri sorpciji odabranih lantanoida pretražnom mikroskopijom (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:248157

Beljan, Nikolina. "Karakterizacija nanočestica željeza pri sorpciji odabranih lantanoida pretražnom mikroskopijom." Master's thesis, University of Zagreb, Faculty of Science, 2022. https://urn.nsk.hr/urn:nbn:hr:217:248157

Beljan, Nikolina. "Karakterizacija nanočestica željeza pri sorpciji odabranih lantanoida pretražnom mikroskopijom." Master's thesis, University of Zagreb, Faculty of Science, 2022. https://urn.nsk.hr/urn:nbn:hr:217:248157

Beljan, N. (2022). 'Karakterizacija nanočestica željeza pri sorpciji odabranih lantanoida pretražnom mikroskopijom', Master's thesis, University of Zagreb, Faculty of Science, accessed 25 December 2024, https://urn.nsk.hr/urn:nbn:hr:217:248157

Beljan N. Karakterizacija nanočestica željeza pri sorpciji odabranih lantanoida pretražnom mikroskopijom [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2022 [cited 2024 December 25] Available at: https://urn.nsk.hr/urn:nbn:hr:217:248157

N. Beljan, "Karakterizacija nanočestica željeza pri sorpciji odabranih lantanoida pretražnom mikroskopijom", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:217:248157

Metadata
TitleKarakterizacija nanočestica željeza pri sorpciji odabranih lantanoida pretražnom mikroskopijom
Title (english)Electron microscopy characterization of iron nanoparticles used for sorption of selected lanthanides
AuthorNikolina Beljan
MentorSanda Rončević (mentor)
Committee memberSanda Rončević (predsjednik povjerenstva)
Committee memberBiserka Prugovečki (član povjerenstva)
Committee memberĐani Škalamera (član povjerenstva)
Committee memberTomislav Jednačak (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Chemistry)
Zagreb
Defense date and country2022-09-23, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Tehnološki kritični elementi poput elemenata rijetkih zemalja i aktinoida imaju široku primjenu u modernim tehnologijama. Zbog njihove velike potražnje i godišnje proizvodnje, ti elementi se često ispuštaju u okoliš pri čemu se akumuliraju u organizmima. U posljednjem desetljeću provode se iscrpna istraživanja s naglaskom na nanočestice željeza kao novim materijalima za uklanjanje lantanoida iz vodenih sustava. Kako su nanočestice željeza podložne oksidaciji, proučava se i površinska modifikacija s ciljem poboljšanja selektivnosti i efikasnosti sorpcije metalnih iona. U ovom radu promatrana je efikasnost sorpcije iona Nd3+ , Eu3+, Er3+, Gd3+, UO2 2+ na nanočestice elementarnog željeza te nanočestice modificirane piridin-2,6-dikarboksilnom kiselinom. Pomoću spektrometrije masa uz induktivno spregnutu plazmu (ICP-MS) promatrana je efikasnost sorpcije odabranih iona. Kako bi se utvrdila sama morfologija nanočestica, provedena je strukturna analiza pomoću skenirajuće elektronske mikroskopije (SEM) i mikroskopije atomskih sila (AFM). Utvrđeno je da sorpcija odabranih iona na nanočestice te površinska modifikacija uvelike utječu na njihovu veličinu i strukturu.
Abstract (english)
Technologically critical elements such as rare earth elements and actinides are widely used in modern technologies. Due to demanding production technologies and widespread use, these elements are often released in the environment and bioaccumulated. Over the last decade, zero-valent nanoparticles have been the focus of research in removal of lanthanides from aqueous systems. However, nanoparticles tend to oxidize, therefore nanoparticles are often surface modified in order to enhance selectivity and efficiency of sorption. In this work, efficiency of neutral nanoparticles and nanoparticles modified with pyridine-2,6-dicarboxylic acid for sorption of selected lanthanides (Nd3+, Eu3+, Er3+, Gd3+, UO2 2+ ) was examined. Efficiency of sorption from aqueous solutions was analyzed by inductively coupled plasma mass spectrometry (ICP-MS). In order to determine the morphology of iron nanoparticles, scanning electron microscopy (SEM) and atomic force microscopy (AFM) analysis were performed. The obtained results showed that adsorption of selected ions on nanoparticles and surface modification affect their size and structure.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:248157
Study programmeTitle: Graduate university studies in chemistry; specializations in: Research programme
Course: Research programme
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra kemije (magistar/magistra kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2024-09-23
Terms of useLicence In copyright icon
Created on2022-10-20 14:15:32