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undergraduate thesis
Elektrokemijska oksidativna degradacija farmaceutika na različitim elektrodnim materijalima
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. urn:nbn:hr:149:952860
Postonjski, Margareta
University of Zagreb
Faculty of Chemical Engineering and Technology

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

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Postonjski, M. (2021). Elektrokemijska oksidativna degradacija farmaceutika na različitim elektrodnim materijalima (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:952860

Postonjski, Margareta. "Elektrokemijska oksidativna degradacija farmaceutika na različitim elektrodnim materijalima." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:952860

Postonjski, Margareta. "Elektrokemijska oksidativna degradacija farmaceutika na različitim elektrodnim materijalima." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:952860

Postonjski, M. (2021). 'Elektrokemijska oksidativna degradacija farmaceutika na različitim elektrodnim materijalima', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:952860

Postonjski M. Elektrokemijska oksidativna degradacija farmaceutika na različitim elektrodnim materijalima [Undergraduate 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:149:952860

M. Postonjski, "Elektrokemijska oksidativna degradacija farmaceutika na različitim elektrodnim materijalima", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:149:952860

Metadata
TitleElektrokemijska oksidativna degradacija farmaceutika na različitim elektrodnim materijalima
Title (english)Electrochemical oxidative degradation of pharmaceuticals at different electrode materials
AuthorMargareta Postonjski
MentorMarijana Kraljić Roković (mentor)
Committee memberMarijana Kraljić Roković (predsjednik povjerenstva)
Committee memberIva Movre Šapić (član povjerenstva)
Committee memberElvira Vidović (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2021-09-21, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Cilj ovog rada bio je ispitati fotoelektrokemijska svojstva TiO2/SnS2 u vodenoj otopini 0,1 mol/dm^3 NaCl u prisustvu i bez prisustva farmaceutika ciprofloxacin (CIP) koncentracije 0,075 mmol/dm^3 te desvenlafaxine (DSV) i amoxicillin (AMOX) koncentracije 0,1 mmol/dm^3. Kao izvor svjetlosti korištena je LED svjetiljka. Provedena su i elektrokemijska ispitivanja u otopini farmaceutika na elektrodi od staklastog ugljika (GC elektroda). Metode elektrokemijske karakterizacije elektroda korištene u ovom radu su ciklička voltametrija, linearna polarizacija, elektrokemijska impendacijska spektroskopija i Mott-Schottsky analiza. Dobiveni rezultati ukazuju da se ispitani farmaceutici adsorbiraju na površinu TiO2/SnS2 elektrode što smanjuje brzinu reakcije pa su tako u prisustvu fartmaceutika dobivene manje vrijednosti fotostruja te je došlo do porasta otpor prijelazu naboja. Ispitivanja provođena na GC elektrodi pokazala su da ne dolazi do elektrokemijske oksidacije farmaceutika u ispitivanom području potencijala, s obzirom da nisu vidljivi karakteristični strujni vrhovi. Prilikom provođenja ispitivanja u inertnoj atmosferi i puferiranoj otopini uz rotaciju electrode dolazi do oksidacije farmaceutika pri čemu se formira strujni vrh.
Abstract (english)
The goal of this study was to examine the photoelectrochemical properties of TiO2/SnS2 electrode in 0.1 mol/dm^3 NaCl aqueous solution with the presence or absence of pharmaceuticals. The tests were performed in 0.075 mmol/dm^3 ciprofloxacin (CIP) solution and 0.1 mmol/dm^3 desvenlafaxine (DSV) and amoxicillin (AMOX) solutions with an LED lamp as a illumination source. Additional electrochemical measurements were done by using glassy carbon electrode (GC electrode). The methods of electrochemical characterization used in this work were cyclic voltammetry, linear polarization, electrochemical impedance spectroscopy, and the Mott-Schottky technique. The obtained results indicated that the tested pharmaceuticals were adsorbed on the surface of TiO2/SnS2 electrode, which resulted in lower values of photocurrents an increase in charge transfer resistance. Experiments performed on the GC electrode showed that there was no electrochemical oxidation of the pharmaceuticals in the tested potential range since no characteristic current peaks were visible. The measurements carried out in an inert atmosphere and a buffered solution with the rotating disc electrode, pointed out that oxidation of the pharmaceuticals was taking place.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:952860
ProjectNumber: IP-2018-01-1982
Title: Nano-katalizatori aktivirani Sunčevim zračenjem u tehnologijama zaštite okoliša
Title: Nano-sized solar-active catalysts for environmental technologies
Acronym: NaSCEnT
Leader: Hrvoje Kušić
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: IP
ProjectNumber: KK.01.1.1.04.0001
Title: Pročišćavanje vode i dobivanje energije korištenjem novih kompozitnih materijala uz Sunčevo zračenje
Leader: Hrvoje Kušić
Jurisdiction: eu
Funder: EC
Funding stream: KF
Study programmeTitle: Applied Chemistry - Undergraduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry
Course: Advanced materials and technologies
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2023-04-14 07:45:42