Primjena elektrolita na bazi hidrogela u elektrokemijskoj impedancijskoj spektroskopiji

undergraduate thesis

• Title (english): Application of hydrogel based electrolyte for electrochemical impedance spectroscopy measurements
• Author: Lucija Janković-Miloš
• Mentor: Helena Otmačić Ćurković (mentor)
• Committee member: Helena Otmačić Ćurković (predsjednik povjerenstva)
• Committee member: Ljerka Kratofil Krehula (član povjerenstva)
• Committee member: Sanja Martinez (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2022-09-21, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

U ovome radu istraživana je mogućnost primjene hidrogelova kao elektrolita u elektrokemijskoj karakterizaciji bakrene i brončane kulturne baštine. U tu svrhu su pripremljeni i ispitani elektroliti u obliku hidrogelova na bazi poli (vinil alkohola) različitog sastava i debljine. Korištena je metoda elektrokemijske impedancijske spektroskopije (EIS), a ispitivanja su provedena na podlogama od golog i korodiranog metala i podlogama metala zaštićenima tankim i debljim slojem zaštitnog premaza. Uspoređeni su rezultati dobiveni sa hidrogelovima pripremljenima u 2 različita elektrolita i dviju različitih debljina sa rezultatima dobivenima u klasičnoj elektrokemijskoj ćeliji. Mjerenja su se provodila u dvoelektrodnom sustavu sa dvije različite protuelektrode i u klasičnoj troelektrodnoj ćeliji sa tekućim elektrolitom.

Abstract (english)

The aim of this work is to study the possibility of using hydrogels as electrolyte for electrochemical characterisation of copper and bronze objects of cultural heritage. For this purpose, electrolytes in the form of hydrogels based on poly (vinyl alcohol) of different compositions and thicknesses are synthetized and characterized. The method that was used is electrochemical impedance spectroscopy (EIS) and the tests were performed on bare and corroded metal substrates and metal substrates with a protective thin and thick layer of coating. The results obtained with hydrogels prepared in 2 different electrolytes and of two different thicknesses were compared with the results obtained in a classical electrochemical cell. The measurements were carried out in a two-electrode system with two different counter-electrodes and in a classic three-electrode cell with a liquid electrolyte.

• Keywords: hidrogel; elektrokemijska impedancijska spektroskopija; elektrokemijska ćelija
• Keywords (english): hydrogel; electrochemical impedance spectroscopy; electrochemical cell
• Language: croatian
• URN:NBN: urn:nbn:hr:149:171583
• Project: Number: IP-2019-04-5030; Title: Razvoj novih rješenja za karakterizaciju i zaštitu brončane kulturne baštine izložene vanjskom okolišu; Title: Development of New Solutions for Characterization and Protection of Bronze Cultural Heritage Exposed to Outdoor Environment; Acronym: BroCH; Leader: Helena Otmačić Ćurković; Jurisdiction: Croatia; Funder: HRZZ; Funding stream: IP
• Study programme: Title: Chemical Engineering - Undergraduate study; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-03-17 14:24:40