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Tailoring Photocatalytic Activity of TiO2 Nanosheets by 57Fe
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SYSNO ASEP 0523889 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Tailoring Photocatalytic Activity of TiO2 Nanosheets by 57Fe Tvůrce(i) Volfová, Lenka (UACH-T) SAI, RID
Pližingrová, Eva (UACH-T) SAI, ORCID
Ecorchard, Petra (UACH-T) SAI, RID, ORCID
Motlochová, Monika (UACH-T) SAI, RID, ORCID
Klementová, M. (CZ)
Jánošíková, Petra (UACH-T) RID, SAI
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Kupčík, Jaroslav (UACH-T) SAI, RID, ORCID
Krýsa, J. (CZ)
Lančok, A. (CZ)
Šubrt, Jan (UACH-T) SAI, RIDCelkový počet autorů 11 Zdroj.dok. Journal of Physical Chemistry C. - : American Chemical Society - ISSN 1932-7447
Roč. 124, č. 12 (2020), s. 6669-6682Poč.str. 14 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova lyophilized aqueous colloids ; sol-gel synthesis ; doped TiO2 ; heterogeneous photocatalysis Vědní obor RIV CA - Anorganická chemie Obor OECD Inorganic and nuclear chemistry CEP GA18-15613S GA ČR - Grantová agentura ČR LM2015073 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Omezený přístup Institucionální podpora UACH-T - RVO:61388980 UT WOS 000526396900021 EID SCOPUS 85082828758 DOI 10.1021/acs.jpcc.9b11781 Anotace TiO2 nanosheets were modified by two different procedures (volume and surface modification) with 0.5 wt % of 57Fe toward Ti. In the case of volume modification, the 57Fe (in the form of 57Fe(NO3)3.nH2O solution) was added at the beginning of preparation of TiO2 nanosheets while the surface modified sample was prepared from the aqueous suspension of undoped TiO2 nanosheets annealed at 800 °C and solution of 57Fe(NO3)3.nH2O via impregnation method. The volume modified sample was later annealed at 650, 800, and 950 °C, no further annealing was done on the surface modified sample. Both types of prepared materials were characterized by electron microscopy, X-ray powder diffraction, surface and porosity measurements, thermal analysis, FTIR and Raman spectroscopies, and Mössbauer spectroscopy. Photocatalytic activity was characterized from the results of 4-chlorophenol (4-CP) decomposition. The surface modified sample exhibited highly effective photocatalytic decomposition of a model pollutant under UV irradiation. On the other hand, the volume modification proved to suppress photocatalytic activity under UV. The visible light activity of 4-CP decomposition was negligible for both volume and surface modified samples. Mössbauer spectroscopy measurements confirmed the presence of iron atoms in the TiO2 structure. The surroundings of the iron atoms exhibit a structure close to that of mixed oxides (Fe1-xTi2-xO5 and Fe2-xTixO3) in solid solution. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2021 Elektronická adresa https://pubs.acs.org/doi/10.1021/acs.jpcc.9b11781
Počet záznamů: 1