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Effect of amines on the peroxo-titanates and photoactivity of annealed TiO2
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SYSNO ASEP 0554759 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of amines on the peroxo-titanates and photoactivity of annealed TiO2 Author(s) Komárková, Bára (UACH-T) RID, SAI, ORCID
Ecorchard, Petra (UACH-T) SAI, RID, ORCID
Motlochová, Monika (UACH-T) SAI, RID, ORCID
Slovák, V. (CZ)
Vislocká, Xénia (UACH-T) RID, SAI
Smržová, Darina (UACH-T) ORCID, SAI, RID
Kormunda, M. (CZ)
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Lušpai, Karol (UFCH-W) ORCID, RID, SAI
Šimunková, M. (SK)
Dvoranová, D. (SK)
Šrámová Slušná, Michaela (UACH-T) SAI
Belháčová, Lenka (UFCH-W) SAI, ORCID
Šubrt, Jan (UACH-T) SAI, RIDArticle number 103808 Source Title Arabian Journal of Chemistry . - : Elsevier - ISSN 1878-5352
Roč. 15, č. 6 (2022)Number of pages 17 s. Language eng - English Country SA - Saudi Arabia Keywords Peroxo-titanates ; Amines ; Photoactivity ; C-doped TiO2 ; Photocatalyst Subject RIV CA - Inorganic Chemistry OECD category Inorganic and nuclear chemistry Subject RIV - cooperation J. Heyrovsky Institute of Physical Chemistry - Physical ; Theoretical Chemistry R&D Projects 8X20001 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2018124 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF18_046/0015586 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UACH-T - RVO:61388980 ; UFCH-W - RVO:61388955 UT WOS 000779141100006 EID SCOPUS 85125750845 DOI 10.1016/j.arabjc.2022.103808 Annotation The aim of this study was to explore the influence of various n-propylamines (mono, di, and tri) and tert-butylamine on the properties of prepared peroxo-titanates and annealed TiO2. Detailed structural characterization (SEM, TEM with EDX, XRD) confirmed the 2D-foil morphology of TiO2 nanocrystals and the CHNS analysis together with XPS showed presence of carbon (under 1 wt. %). The annealed TiO2 showed excellent photocatalytic activity and up to four times higher decomposition rate constant upon UV irradiation than the P25. Favourable growth of TiO2 crystals was observed especially when propylamine and tert-butylamine were used (as precursors for the peroxo-titanates). Increased photocatalytic efficiency of the highly crystalline nano-TiO2 was confirmed due to high-reactive anatase facets and the morphology composed of microsheets formed by interconnected nanocrystals. The photoinduced electron transfer was confirmed via EPR spectroscopy. This synthesis’ procedure offers a novel preparation method of highly photoactive C-doped TiO2 achieved relatively easily after annealing of lyophilized amino-peroxo-titanate. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2023 Electronic address http://hdl.handle.net/11104/0329415
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