prikaz prve stranice dokumenta Primjena kompozitnih fotokatalizatora u fotokatalitičkoj redukciji supstituiranih aromata
Access restricted to students and staff of home institution
undergraduate thesis
Primjena kompozitnih fotokatalizatora u fotokatalitičkoj redukciji supstituiranih aromata
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. urn:nbn:hr:149:944508
Grbin, Ivana
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

Grbin, I. (2021). Primjena kompozitnih fotokatalizatora u fotokatalitičkoj redukciji supstituiranih aromata (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:944508

Grbin, Ivana. "Primjena kompozitnih fotokatalizatora u fotokatalitičkoj redukciji supstituiranih aromata." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:944508

Grbin, Ivana. "Primjena kompozitnih fotokatalizatora u fotokatalitičkoj redukciji supstituiranih aromata." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:944508

Grbin, I. (2021). 'Primjena kompozitnih fotokatalizatora u fotokatalitičkoj redukciji supstituiranih aromata', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 17 February 2025, https://urn.nsk.hr/urn:nbn:hr:149:944508

Grbin I. Primjena kompozitnih fotokatalizatora u fotokatalitičkoj redukciji supstituiranih aromata [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2021 [cited 2025 February 17] Available at: https://urn.nsk.hr/urn:nbn:hr:149:944508

I. Grbin, "Primjena kompozitnih fotokatalizatora u fotokatalitičkoj redukciji supstituiranih aromata", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:149:944508

Metadata
TitlePrimjena kompozitnih fotokatalizatora u fotokatalitičkoj redukciji supstituiranih aromata
Title (english)Application of composite photocatalysts for the reduction of substituted aromatics
AuthorIvana Grbin
MentorMarin Kovačić (mentor)
Committee memberMarin Kovačić (predsjednik povjerenstva)
Committee memberZvonimir Katančić (član povjerenstva)
Committee memberPetar Kassal (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2021-07-09, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Fotokataliza je polje zelene kemije koja koristi svjetlost u razgradnji tvari te ne zagađuje okoliš. U smislu organske kemije, fotokatalitička redukcija podrazumijeva nastajanje jednostrukih kovalentih veza. Kompozitni fotokatalizatori su fotokatalizatori modificirani metalima, nemetalima i ionskim komponentama. Dodatak modifikacija utječe na fotokatalizator i primijećeno je da uz pomoć kompozitnih fotokatalizatora, reakcije redukcije u većini slučajeva mogu se odvijati uz prisutsvo Sunčeve svjetlosti. Konvencionalni pristupi redukciji zahtijevaju visoke temperature i tlakove te korištenje raznih otapala koja kasnije treba skladištiti. S obzirom na cilj zelene kemije da se ne koriste otapala, energetska potreba redukcijskih sredstava je izravno osigurana Sunčevom energijom. U ovom radu prikazani su različiti kompozitni fotokatalizatori koji sudjeluju u redukciji supstituiranih aromatskih spojeva (4-aminofenol, 4-nitrofenol, nitroanilin, benzaldehid), usporedba sa fotokatalizatorima bez modifikacija kao i fotokataliza bez upotrebe fotokatalizatora (fotoliza). Također, prikazana je sinteza kompozitnih fotokatalizatora, utjecaj veličine čestica na reakciju te utjecaj redukcijskih sredstava. Za svaki višekomponentni fotokatalizator izvedeno je nekoliko ciklusa ponovne upotrebe kako bi se utvrdila njihova stabilnost i mogućnost ponovnog korištenja u reakciji redukcije.
Abstract (english)
Photocatalysis is a field of green chemistry that uses light to decompose matter and does not pollute the environment. In terms of organic chemistry, photocatalytic reduction involves the formation of single covalent bonds. Composite photocatalysts are photocatalysts modified with metals, non-metals and ionic components. The addition of modifications affects the photocatalyst and it has been observed that with the help of composite photocatalysts, reduction reactions can in most cases take place in the presence of sunlight. Conventional approaches to reduction require high temperatures and pressures and the use of various solvents that need to be stored later. Given the goal of green chemistry not to use solvents, the energy need of reducing agents is directly provided by solar energy. This paper presents various composite photocatalysts involved in the reduction of substituted aromatic compounds (4-aminophenol, 4-nitrophenol, nitroaniline, benzaldehyde), comparison with photocatalysts without modifications as well as photocatalysis without the use of photocatalysts. Also, the synthesis of composite photocatalysts, the influence of particle size on the reaction and the influence of reducing agents are presented. Several recycling cycles were performed for each multicomponent photocatalyst to determine their reusability in the reduction reaction.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:944508
Study programmeTitle: Environmental Engineering - Undergraduate study
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka ekoinženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka ekoinženjerstva)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2023-03-29 11:40:26