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undergraduate thesis
Razvoj mikroelektrode modificirane TiO2 nanočesticama
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. urn:nbn:hr:149:231488
Zrinski, Ivana
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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Zrinski, I. (2017). Razvoj mikroelektrode modificirane TiO2 nanočesticama (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:231488

Zrinski, Ivana. "Razvoj mikroelektrode modificirane TiO2 nanočesticama." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. https://urn.nsk.hr/urn:nbn:hr:149:231488

Zrinski, Ivana. "Razvoj mikroelektrode modificirane TiO2 nanočesticama." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. https://urn.nsk.hr/urn:nbn:hr:149:231488

Zrinski, I. (2017). 'Razvoj mikroelektrode modificirane TiO2 nanočesticama', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 17 June 2024, https://urn.nsk.hr/urn:nbn:hr:149:231488

Zrinski I. Razvoj mikroelektrode modificirane TiO2 nanočesticama [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2017 [cited 2024 June 17] Available at: https://urn.nsk.hr/urn:nbn:hr:149:231488

I. Zrinski, "Razvoj mikroelektrode modificirane TiO2 nanočesticama", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:149:231488

Metadata
TitleRazvoj mikroelektrode modificirane TiO2 nanočesticama
Title (english)Developement of microelectrode modified by TiO2 nanoparticles
AuthorIvana Zrinski
MentorSanja Martinez (mentor)
Committee memberSanja Martinez (predsjednik povjerenstva)
Committee memberSuzana Sopčić (član povjerenstva)
Committee memberPetar Kassal (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2017-07-14, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Basic Technical Sciences
Materials
Abstract
U ovom radu ispitan je elektrokatalitički utjecaj TiO2 nanočestica na oksidaciju mokraćne kiseline na mikroelektrodi od grafitne paste. Mjerenje je provedeno na elektrodi bez nanočestica i sa masenim udjelom od 10 % nanočestica TiO2. Na obje elektrode, ispitan je utjecaj koncentracije mokraćne kiseline kao vodotopivog antioksidativnog standarda i brzine polarizacije, na voltametrijski odziv sustava. Dobiveni rezultati pokazuju da nanočestice imaju značajan elektrokatalitički efekt koji se očituje u pojavi strujnih valova pri niskim potencijalima, u području 190 do 450 mV i u pojavi kvazireverziblnosti. Efekt je vidljiv u 200 μM otopini mokraćne kiseline pri svim brzinama polarizacije. Rezultati ukazuju na mogućnost daljnjeg ispitivanje mikroelektrode od grafitne paste s nanočesticama kao senzora za određivanje antioksidativnih tvari u raznim medijima in situ.
Abstract (english)
In this study, the electrocatalytic influence of TiO2 nanoparticles on uric acid oxidation on graphite microelectrode has been studied. The measurement was performed at a nanoparticle-free electrode and at an electrode with 10% TiO2 nanoparticle content. On both electrodes, the influence of uric acid concentration as a water-soluble antioxidant standard and the influence of polarization rate on voltammetric response of the system has been studied. The results obtained show that nanoparticles have a significant electrocatalytic effect that is reflected in the occurrence of low potential current waves in the range of 190 to 450 mV and in the appearance of quasireversibility. The effect is visible in a 200 μM uric acid solution at all polarization rates. The results indicate the possibility of further testing of TiO2 nanoparticle -graphite paste microelectrodes as sensors for the determination of antioxidant substances in various media in situ.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:231488
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 on2021-01-08 11:40:13