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undergraduate thesis
Ispitivanje efikasnosti PEDOT/TiO2 kompozitnog fotokatalizatora pri različitom opterećenju voda onečišćenih Acid Blue 25 bojilom
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. urn:nbn:hr:149:175369
Posedi, Tina
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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Posedi, T. (2017). Ispitivanje efikasnosti PEDOT/TiO2 kompozitnog fotokatalizatora pri različitom opterećenju voda onečišćenih Acid Blue 25 bojilom (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:175369

Posedi, Tina. "Ispitivanje efikasnosti PEDOT/TiO2 kompozitnog fotokatalizatora pri različitom opterećenju voda onečišćenih Acid Blue 25 bojilom." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. https://urn.nsk.hr/urn:nbn:hr:149:175369

Posedi, Tina. "Ispitivanje efikasnosti PEDOT/TiO2 kompozitnog fotokatalizatora pri različitom opterećenju voda onečišćenih Acid Blue 25 bojilom." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. https://urn.nsk.hr/urn:nbn:hr:149:175369

Posedi, T. (2017). 'Ispitivanje efikasnosti PEDOT/TiO2 kompozitnog fotokatalizatora pri različitom opterećenju voda onečišćenih Acid Blue 25 bojilom', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 02 October 2024, https://urn.nsk.hr/urn:nbn:hr:149:175369

Posedi T. Ispitivanje efikasnosti PEDOT/TiO2 kompozitnog fotokatalizatora pri različitom opterećenju voda onečišćenih Acid Blue 25 bojilom [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2017 [cited 2024 October 02] Available at: https://urn.nsk.hr/urn:nbn:hr:149:175369

T. Posedi, "Ispitivanje efikasnosti PEDOT/TiO2 kompozitnog fotokatalizatora pri različitom opterećenju voda onečišćenih Acid Blue 25 bojilom", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:149:175369

Metadata
TitleIspitivanje efikasnosti PEDOT/TiO2 kompozitnog fotokatalizatora pri različitom opterećenju voda onečišćenih Acid Blue 25 bojilom
Title (english)Testing the efficiency of PEDOT/TiO2 composite photocatalyst at different load of Acid Blue 25 dye contaminant in water
AuthorTina Posedi
MentorZlata Hrnjak-Murgić (mentor)
Committee memberZlata Hrnjak-Murgić (predsjednik povjerenstva)
Committee memberZvonimir Katančić (član povjerenstva)
Committee memberSuzana Sopčić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2017-09-21, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Chemical Engineering in Material Development
Abstract
Fotokataliza je jedna od kemijskih metoda obrade otpadnih voda koje su često opterećene raznim organskim spojevima. Proces fotokatalize uključuje razgradnju onečišćenja uz prisutnost fotokatalizatora pod utjecajem svjetlosti. Jedan od najčešćih fotokatalizatora je TiO2, ali zbog široke zabranjene zone aktivan je samo pod UV svjetlom. Kao aktivatori TiO2 koriste se elektrovodljivi polimeri koji imaju malu širinu zabranjene zone i zbog toga apsorbiraju vidljivi dio zračenja te proširuju fotokatalitičku aktivnost u vidljivi dio spektra. U radu su sintetizirani nanokompozitni fotokatalizatori elektrovodljivog polimera poli(3,4-etilendioksitiofen) i titanijevog oksid (PEDOT-TiO2) metodom kemijske oksidacijske polimerizacije uz prisutnosti FeCl3 kao oksidansa. Omjeri EDOT-a i TiO2 prilikom sinteze bili su 1:2, 1:3, 1:4, 1:5, 1:10 i 1:20 zbog čega nastali kompoziti imaju različiti sastav. Sintetizirani fotokatalizatori karakterizirani su mjerenjem elektrovodljivosti metodom četiri točke i ispitivanjem morfološke strukture pretražnom elektronskom mikroskopijom (SEM). Fotokatalitička aktivnost ispitana je praćenjem razgradnje Acid Blue 25 bojila (γ = 30 mg/L) u vodi uz prisutnost simuliranog Sunčevog zračenja i određivanjem apsorbancije na UV/ViS spektrofotometru. Nanokompozitni fotokatalizator PEDOT-TiO2 omjera 1:20 upotrijebljen je za određivanje fotokatalitičke aktivnosti i ukupnog organskog ugljika (TOC) za različite koncentracije AB25 bojila (20, 30, 40, 60 mg/L). Rezultati ispitivanja pokazali su da se povećanjem koncentracije Acid Blue 25 bojila smanjuje fotokatalitička aktivnost nanokompozitnog fotokatalizatora PEDOT-TiO2 omjera 1:20. Također, smanjuje se i prividna brzina razgradnje.
Abstract (english)
Photocatalysis is one of the chemical methods used for treatment of wastewaters, usually loaded with differentorganic compounds. Photocatalysis process involves pollutant degradation in the presence of the photocatalyst under light irradiation. Most widely used photocatalyst is TiO2, but because of its wide band gap it is active only under UV light. Conductive polymers have low band gap, they absorb visible light irradiation and therefore can be used as TiO2 activator, extending its activity to visible part of the spectrum. In this work the nanocomposite photocatalysts of conductive polymer poly(3,4-ethylenedioxythiophene) and titanium oxide (PEDOT-TiO2) were synthesized with FeCl3 oxidant by chemical oxidative polymerization. Composites were synthesized with ratios of EDOT:TiO2 during synthesis of 1:2, 1:3, 1:4, 1:5, 1:10 and 1:20 which resulted in different composition of obtained photocatalysts. They were characterized by measuring the conductivity with four point probe test and determination of morphological structure by scanning electron microscope (SEM). The photocatalytic activity was investigated by monitoring the removal of Acid Blue 25 dye (γ = 30 mg/L) in water under the simulated solar irradiation and by determining absorbance on the UV/Vis spectrophotometer. Nanocomposite photocatalyst PEDOT-TiO2 1:20 was used to determine photocatalytic activity and total organic carbon (TOC) for different concentrations of AB25 dye (20, 30, 40, 60 mg/L). The results showed that higher concentration of Acid Blue 25 dye caused lower photocatalytic activity of nanocomposite photocatalyst PEDOT-TiO2 1:20. The apparent rate of degradation was also decreasing.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:175369
Study programmeTitle: 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 resourceText
File originBorn digital
Access conditionsOpen access
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Created on2021-03-18 12:50:44