Nanočestice željeza kao sorbensi za odabrane tehnološki kritične elemente ; Kolorimetrija u srednjoškolskoj nastavi kemije: školski mini projekt

master's thesis

• Title (english): Iron nanoparticles in sorption of selected technology-critical elements ; Colorimetry in high school chemistry course: school mini project
• Author: Ivan Ilakovac
• Mentor: Sanda Rončević (mentor)
• Mentor: Draginja Mrvoš-Sermek (mentor)
• Committee member: Sanda Rončević (predsjednik povjerenstva)
• Committee member: Draginja Mrvoš-Sermek (član povjerenstva)
• Committee member: Maja Planinić (član povjerenstva)
• Committee member: Vedran Đerek (član povjerenstva)
• Committee member: Predrag Novak (član povjerenstva)
• Committee member: Katarina Jeličić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Granter: University of Zagreb; Faculty of Science; (Department of Physics); Zagreb
• Defense date and country: 2021-09-22, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

Ovaj rad se sastoji od eksperimentalnog i metodičkog dijela. U eksperimentalnom dijelu rada ispitana je sorpcija odabranih lantanoida (lantan, neodimij, samarij, europij, gadolinij) pomoću neutralnih nanočestica željeza i nanočestica modificiranih dipikolinskom kiselinom u molarnom omjeru željeza i liganda 2:1. Karakterizacijom sintetiziranih nanočestica (FT-IR, AFM) i asignacijom FT-IR spektara utvrđeno je da su čestice uspješno modificirane. Metodom AFM uočeno je smanjenje veličine modificiranih nanočestica u odnosu na neutralne. Rezultati dobiveni metodom ICP-MS upućuju na povećanje sorpcije s povećanjem masene koncentracije lantanoida do određene granice kada se postiže zasićenje, pri čemu je uočena veća efikasnost sorpcije kod modificiranih nanočestica. U metodičkom dijelu ovog rada pod nazivom Kolorimetrija u srednjoškolskoj nastavi kemije: školski mini-projekt prikazan je detaljan teorijski pregled očekivanih predznanja, detaljne upute za nastavnika i učenika uz ogledni primjerak eksperimenta. Odabrani odgojno-obrazovni ishodi iz Kurikuluma za nastavni predmet Kemija za osnovne škole i gimnazije u Republici Hrvatskoj ostvaruju se izvodeći kolorimetrijska mjerenja pomoću mjernog uređaja Labdisc i pomoću pametnog telefona.

Abstract (english)

This Diploma thesis consist of two parts: the research part and the methodical part. Sorption of selected lanthanides (lanthanum, neodymium, samarium, europium and gadolinium) on zero-valent iron nanoparticles and patricles modified with dipicolinic acid in 2:1 molar ratio of iron to ligand was examined in this work. Characterization of synthetized nanoparticles by FT-IR and AFM methods confirmed sucessful modification of particle surface. Reduction of particle size of modified particles was observed by AFM method. The results obtained by ICP-MS method confirmed more pronounced sorption by use of modified nanoparticles. Colorimetry in high school chemistry course: school mini-project is the methodical part of this work. Detailed theoretical overview of prior knowledge, instruction for teachers and pupils and an example of the colorimetry experiment were proposed. Selected educational outcomes from Croatian chemistry education curriculum in elementary and grammar schools were fulfilled by colorimetric experiments using Labdisc device and smartphone application.

• Keywords: kolorimetrija; lantanoidi; nanočestice; poučavanje kemije; sorpcija; željezo
• Keywords (english): chemistry teaching; colorimetry; iron; lanthanides; nanoparticles; sorption
• Language: croatian
• URN:NBN: urn:nbn:hr:217:063089
• Study programme: Title: Physics and Chemistry; specializations in: Education; Course: Education; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: magistar/magistra edukacije fizike i kemije (magistar/magistra edukacije fizike i kemije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access; Embargo expiration date: 2023-09-22
• Created on: 2021-09-24 09:43:10