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Photocatalytic degradation of bisphenol A induced by dense nanocavities inside aligned 2D-TiO2 nanostructures
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SYSNO ASEP 0503773 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Photocatalytic degradation of bisphenol A induced by dense nanocavities inside aligned 2D-TiO2 nanostructures Author(s) Bakardjieva, Snejana (UACH-T) SAI, RID, ORCID
Fajgar, Radek (UCHP-M) RID, ORCID, SAI
Jakubec, Ivo (UACH-T) SAI, RID, ORCID
Kočí, Eva (UACH-T) SAI, RID
Zhigunov, Alexander (UMCH-V) RID, ORCID
Chatzisymeon, E. (GB)
Davididou, K. (GB)Number of authors 7 Source Title Catalysis Today. - : Elsevier - ISSN 0920-5861
Roč. 328, SI (2019), s. 189-201Number of pages 13 s. Action European meeting on Solar Chemistry and Photocatalysis: Environmental Applications (SPEA) /10./ Event date 04.06.2018 - 08.06.2018 VEvent location Almería Country ES - Spain Event type WRD Language eng - English Country NL - Netherlands Keywords Freeze-drying ; Anatase TiO2 ; Nanoconfined water ; Nanocavities ; Photocatalysis ; Emerging pollutants Subject RIV CA - Inorganic Chemistry OECD category Inorganic and nuclear chemistry Subject RIV - cooperation Institute of Chemical Process Fundamentals - Inorganic Chemistry
Institute of Macromolecular Chemistry - Macromolecular ChemistryR&D Projects GA18-15613S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access with time embargo (15.05.2021) Institutional support UACH-T - RVO:61388980 ; UCHP-M - RVO:67985858 ; UMCH-V - RVO:61389013 UT WOS 000461462200029 EID SCOPUS 85059065818 DOI 10.1016/j.cattod.2018.12.037 Annotation The preparation of materials with aligned porosity in the nanometer range is of technological importance for a wide range of applications in molecular filtration, biomaterials and catalysis. Herein we present the advantages offered by cryo lyophilisation technique as a smart and green non-standard concept to produce dense regular polyhedral nanocavities inside the 2D TiO2 nanosheets. Hierarchical morphologies of nanocavities start to appear at temperature higher than 800 degrees C and are strongly influenced by polymorph TiO2 evolution competing reactions. The small angle X-ray scattering (SAXS) analysis confirms self-assembled 3D nanocavities with size range from 5 to 10 nm in both length and width, and depth (similar to)3.6 nm formed after realising of the confined icewater. It was found that nanocavities enhance significantly the absorption properties of TiO2 in the UV region, thereby providing a new approach to increase the photoreactivity of 2D TiO2 nanosheets. The annealed precursors containing aqueous solution of peroxo polytitanic acid (PPTA) at 800 degrees C exhibited the highest photoactivity in degrading bisphenol A (BPA) due to evenly distributed nanocavities inside single anatase TiO2 nanocrystals interconnected and aligned onto the 2D TiO2 nanosheet arrays. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0295554
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