prikaz prve stranice dokumenta Karakterizacija ionsko-selektivne membrane izvedene na površini metalne elektrode ispisane tintnim pisačem
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master's thesis
Karakterizacija ionsko-selektivne membrane izvedene na površini metalne elektrode ispisane tintnim pisačem
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. urn:nbn:hr:149:283860
Kahlina, Josipa
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

Kahlina, J. (2021). Karakterizacija ionsko-selektivne membrane izvedene na površini metalne elektrode ispisane tintnim pisačem (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:283860

Kahlina, Josipa. "Karakterizacija ionsko-selektivne membrane izvedene na površini metalne elektrode ispisane tintnim pisačem." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:283860

Kahlina, Josipa. "Karakterizacija ionsko-selektivne membrane izvedene na površini metalne elektrode ispisane tintnim pisačem." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:283860

Kahlina, J. (2021). 'Karakterizacija ionsko-selektivne membrane izvedene na površini metalne elektrode ispisane tintnim pisačem', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:283860

Kahlina J. Karakterizacija ionsko-selektivne membrane izvedene na površini metalne elektrode ispisane tintnim pisačem [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2021 [cited 2024 November 22] Available at: https://urn.nsk.hr/urn:nbn:hr:149:283860

J. Kahlina, "Karakterizacija ionsko-selektivne membrane izvedene na površini metalne elektrode ispisane tintnim pisačem", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:149:283860

Metadata
TitleKarakterizacija ionsko-selektivne membrane izvedene na površini metalne elektrode ispisane tintnim pisačem
Title (english)Characterisation of ink-jet printed all-solid-state ion-selective electrode
AuthorJosipa Kahlina
MentorStjepan Milardović (mentor)
Committee memberStjepan Milardović (predsjednik povjerenstva)
Committee memberPetar Kassal (član povjerenstva)
Committee memberZoran Mandić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2021-07-14, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Predmet ovog rada bila je priprava i karakterizacija amonijeve selektivne membrane izvedene na površini srebrove elektrode ispisane tintnim pisačem. Amonijeva selektivna membrana pripravljena je otapanjem polivinil klorida (PVC) u tetrahidrofuranu, uz dodatak plastifikatora bis(2–etilheksil) sebacata te ionofora nonaktina. Krajnji cilj ovog diplomskog rada bio je razvoj planarnog potenciometrijskog senzora za detekciju amonijeva iona. Zbog toga je proveden niz ispitivanja kojima su karakterizirane klasična elektroda s unutarnjim elektrolitom, čvrsta grafitna elektroda i planarna elektroda ispisana tintnim pisačem. Za razvoj amonijeve selektivne membrane izvedene na površini srebrove elektrode ispisane tintnim pisačem ispitane su četiri formulacije vodljivog sloja na bazi grafita i polivinil butirala (PVB) s različitim masenim udjelima grafita i to redom: 50 %, 55 %, 60% i 65%. Svaka elektroda oslojena je pojedinim slojem i amonijevom selektivnom membranom, te ispitana potenciometrijski u otopinama amonijeva klorida množinskih koncentracija u rasponu 10^–1–10^–6 M. U svrhu karakterizacije pripravljenih PVB grafitom modificirane grafitne elektrode upotrijebljene su ciklička voltametrija i elektrokemijska impedancijska spektroskopija. Ciklički voltamogrami i impedancijski spektri snimani su u troelektrodnom sustavu sastavljenom od referentne Ag|AgCl|3 M KCl||2 M NaNO3, radne grafitne elektrode i pomoćne Pt elektrode u 5 mM K3[Fe(CN)6] pripravljenom u 0,1 M otopini KCl.
Abstract (english)
The subject of this thesis was the fabrication and characterization of an ammonium–selective membrane coated on the surface of an ink–jet printed silver electrode. The ammonium selective membrane was prepared by dissolving polyvinyl chloride (PVC) in tetrahydrofuran with the addition of the plasticizer bis(2–ethylhexyl) sebacate and the ionophore nonactin. The aim of this work was to develop a planar potentiometric sensor for the detection of ammonium ions. For this purpose, a series of measurements were carried out characterizing the classical internal electrolyte electrode, the solid–state graphite electrode and the planar ink–jet printed electrode. For the development of the ammonium–selective membrane fabricated on the surface of the inkjet–printed silver electrode, four conductive layer formulations based on graphite and polyvinyl butyral (PVB) with different mass fractions of graphite were tested: 50 %, 55 %, 60 % and 65 %. Each electrode was coated with a separate transduction layer and an ammonium selective membrane, and tested potentiometrically in solutions of ammonium chloride with molar concentrations ranging from 10^–1–10^–6 M. Cyclic voltammetry and electrochemical impedance spectroscopy were used to characterize the prepared graphite electrodes modified with graphite:PVB layer. Cyclic voltammograms and impedance spectra were recorded in a three–electrode system consisting of a reference Ag | AgCl || 3 M KCl || 2 M NaNO3, working graphite electrodes and auxiliary Pt electrodes in 5 mM K3[Fe(CN)6] prepared in 0.1 M KCl solution.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:283860
Study programmeTitle: Applied Chemistry - Graduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry
Course: Applied organic chemistry
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 conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2023-04-07 09:07:04