prikaz prve stranice dokumenta Utjecaj strukturnih defekata na aktivnost TiO2 fotokatalizatora
Access restricted to students and staff of home institution
undergraduate thesis
Utjecaj strukturnih defekata na aktivnost TiO2 fotokatalizatora
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. urn:nbn:hr:149:086230
Matić, Kristina
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

Matić, K. (2020). Utjecaj strukturnih defekata na aktivnost TiO2 fotokatalizatora (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:086230

Matić, Kristina. "Utjecaj strukturnih defekata na aktivnost TiO2 fotokatalizatora." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:149:086230

Matić, Kristina. "Utjecaj strukturnih defekata na aktivnost TiO2 fotokatalizatora." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:149:086230

Matić, K. (2020). 'Utjecaj strukturnih defekata na aktivnost TiO2 fotokatalizatora', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 11 June 2024, https://urn.nsk.hr/urn:nbn:hr:149:086230

Matić K. Utjecaj strukturnih defekata na aktivnost TiO2 fotokatalizatora [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2020 [cited 2024 June 11] Available at: https://urn.nsk.hr/urn:nbn:hr:149:086230

K. Matić, "Utjecaj strukturnih defekata na aktivnost TiO2 fotokatalizatora", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:149:086230

Metadata
TitleUtjecaj strukturnih defekata na aktivnost TiO2 fotokatalizatora
Title (english)Influence of structural defects on the activity of TiO2 photocatalysts
AuthorKristina Matić
MentorVesna Tomašić (mentor)
Committee memberVesna Tomašić (predsjednik povjerenstva)
Committee memberVanja Gilja (član povjerenstva)
Committee memberLjerka Kratofil Krehula (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2020-09-24, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Ovaj rad obuhvaća pregled različitih poluvodičkih materijala, kao što su TiO2, ZnO, g-C3N4, kompozitni materijali te fotokatalizatori koji sadrže bizmut. Navedeni materijali koriste se kao potencijalni fotokatalizatori u zaštiti okoliša, a u većini istraživanja poseban naglasak stavlja se na primjenu TiO2 kao fotokatalizatora. TiO2 odlikuje visoka fotoosjetljivost, ekološka prihvatljivost, kemijska stabilnost, mogućnost recikliranja te dostupnost zbog relativno niske cijene. Međutim, njegova fotokatalitička aktivnost je ograničena, zbog velike širine zabranjene zone (Eg = 3,2 eV), što omogućava njegovu fotoaktivaciju samo u uvjetima UV zračenja. Međutim, poznato je da samo 4-5 % prirodnog Sunčevog zračenja posjeduje energiju dovoljnu za aktivaciju TiO2 fotokatalizatora. Zbog toga se u brojnim istraživanjima provode odgovarajuće modifikacije postojećih fotokatalizatora i/ili se pripremaju novi napredniji fotokatalizatori i kompozitni materijali koje je moguće aktivirati u vidljivom dijelu spektra. Modifikacijom postojećih fotokatalizatora uglavnom nastaju strukturni defekti koji dovode do poboljšanja fotokatalitičkih svojstva, pri čemu se izdvajaju defekti vezani uz nastajanje Ti3+ i upražnjenih mjesta kisika. U ovom radu dan je pregled postupaka sinteze/modifikacije TiO2 fotokatalizatora koji rezultiraju odgovarajućim strukturnim defektima. Također su opisane osnovne značajke TiO2 fotokatalizatora koje se mijenjaju uvođenjem strukturnih defekata te je objašnjen utjecaj strukturnih defekata na fotokatalitičko djelovanje TiO2.
Abstract (english)
This work includes an overview of various semiconductor materials, such as TiO2, ZnO, g-C3N4, composite materials and photocatalysts that contain bismuth. These materials are used as potential photocatalysts in environmental protection and in the most research an emphasis is on the application of TiO2 as photocatalyst. TiO2 is characterized by high photosensitivity, environmental acceptability, chemical stability, recycling capability and availability due to the relatively low cost. However, its photocatalytic activity is limited, due to wide band gap (Eg = 3.2 eV), which allows its photoactivation only under conditions of UV radiation. However, it is known that only 4-5% of natural solar radiation has enough energy to activate TiO2 photocatalysts. Therefore, appropriate modifications of existing photocatalysts are being carried out in numerous studies and/or new more advanced photocatalysts and composite materials are being prepared, which can be activated in the visible part of the spectrum. Modification of existing photocatalysts mainly creates structural defects that lead to improvement of photocatalytic properties, singling out defects related to the formation of Ti3+ and oxygen vacancies. This paper provides an overview of the synthesis/modification procedures of TiO2 photocatalysts resulting in appropriate structural defects. The basic properties of TiO2 photocatalyst, closely related to its defect disorder, are described and the influence of structural defects on photocatalytic performance of TiO2 is explained.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:086230
ProjectNumber: IP-2018-01-8669
Title: Intenzifikacija fotokatalitičkih i katalitičkih procesa za obradu otpadnih voda i otpadnih plinova
Acronym: IN-PhotoCat
Leader: Vesna Tomašić
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: IP
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 conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2023-05-05 11:16:51