Composite TiO2-based photocatalyst with enhanced performance

0561807 - ÚFCH JH 2024 RIV FR eng J - Článek v odborném periodiku
Mužíková, Barbora - Martiniaková, Ivana - Mikysková, Eliška - Mergl, Martin - Kalbáč, Martin - Žouželka, Radek - Rathouský, Jiří
Composite TiO2-based photocatalyst with enhanced performance.
Photochemical & Photobiological Sciences. Roč. 22, JAN 2023 (2023), s. 73-86. ISSN 1474-905X. E-ISSN 1474-9092
Grant CEP: GA MPO(CZ) FV40209; GA ČR(CZ) GA19-12109S; GA ČR(CZ) GA19-21801S; GA MŠMT(CZ) LM2018124; GA MŠMT(CZ) EF16_013/0001821
Grant ostatní: AV ČR(CZ) MSM200402101; GA MŠk(CZ) CZ.02.1.01/0.0/0.0/16_013/0001821
Program: Program na podporu mezinárodní spolupráce začínajících výzkumných pracovníků
Institucionální podpora: RVO:61388955
Klíčová slova: Photocatalysis * Air purification * NOx * Titanium dioxide * Metal oxides * Composite photocatalyst
Obor OECD: Physical chemistry
Impakt faktor: 3.1, rok: 2022
Způsob publikování: Open access

TiO2 is the most studied photocatalyst because of its non-toxicity, chemical stability, and low cost. However, the problem of TiO2 is its low activity in the visible region of the spectrum. In this study, we focused on the preparation of composite photocatalytic materials with altered light absorption properties. TiO2 P25 and various metal oxides were mechanically joined by ball-milling and immobilized on glass plates. The prepared samples were evaluated based on their ability to degrade NO in gas phase. The formation of undesirable byproducts was also investigated. Four best performing composites were later chosen, characterized, and further evaluated under various conditions. According to their performance, the metal oxide additives can be divided into three groups. P25/Fe2O3 showed the most promising results-an increase in overall deNO(x) activity under modified ISO conditions and altered selectivity (less NO2 is formed) under both simulated outdoor and simulated indoor conditions. On the other hand, P25/V2O5 composite showed negligible photocatalytic activity. The intermediate group includes P25/WO3 and P25/ZnO photocatalysts, whose performances are similar to those of pristine P25.
Trvalý link: https://hdl.handle.net/11104/0334306