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Effect of Multiply Twinned Ag-(0) Nanoparticles on Photocatalytic Properties of TiO2 Nanosheets and TiO2 Nanostructured Thin Films
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SYSNO ASEP 0556220 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of Multiply Twinned Ag-(0) Nanoparticles on Photocatalytic Properties of TiO2 Nanosheets and TiO2 Nanostructured Thin Films Author(s) Bakardjieva, Snejana (UACH-T) SAI, RID, ORCID
Mareš, Jakub (UACH-T) SAI, RID
Kočí, Eva (UACH-T) SAI, RID
Tolasz, Jakub (UACH-T) RID, ORCID, SAI
Fajgar, Radek (UCHP-M) RID, ORCID, SAI
Ryukhtin, Vasil (UJF-V) RID, ORCID, SAI
Klementová, Mariana (FZU-D) RID, ORCID
Michna, S. (CZ)
Bíbová, Hana (UFCH-W) RID
Holmestad, R. (NO)
Titorenkova, R. (BG)
Čaplovicová, M. (SK)Number of authors 12 Article number 750 Source Title Nanomaterials. - : MDPI
Roč. 12, č. 5 (2022)Number of pages 24 s. Language eng - English Country CH - Switzerland Keywords anatase ; Ag(0) NPs ; twinned defects ; nanosheets ; thin films ; photocatalytic activity Subject RIV CA - Inorganic Chemistry OECD category Inorganic and nuclear chemistry Subject RIV - cooperation Nuclear Physics Institute - Industrial Chemistry, Chemical Engineering
J. Heyrovsky Institute of Physical Chemistry - Physical ; Theoretical Chemistry
Institute of Chemical Process Fundamentals - Physical ; Theoretical Chemistry
Institute of Physics - Inorganic ChemistryR&D Projects GA18-15613S GA ČR - Czech Science Foundation (CSF) Research Infrastructure CzechNanoLab - 90110 - Vysoké učení technické v Brně Method of publishing Open access Institutional support UACH-T - RVO:61388980 ; UCHP-M - RVO:67985858 ; UJF-V - RVO:61389005 ; FZU-D - RVO:68378271 ; UFCH-W - RVO:61388955 UT WOS 000771674700001 DOI 10.3390/nano12050750 Annotation Ag-decorated TiO2 nanostructured materials are promising photocatalysts. We used non-standard cryo-lyophilization and ArF laser ablation methods to produce TiO2 nanosheets and TiO2 nanostructured thin films decorated with Ag nanoparticles. Both methods have a common advantage in that they provide a single multiply twinned Ag-(0) characterized by {111} twin boundaries. Advanced microscopy techniques and electron diffraction patterns revealed the formation of multiply twinned Ag-(0) structures at elevated temperatures (500 degrees C and 800 degrees C). The photocatalytic activity was demonstrated by the efficient degradation of 4-chlorophenol and Total Organic Carbon removal using Ag-TiO2 nanosheets, because the multiply twinned Ag-(0) served as an immobilized photocatalytically active center. Ag-TiO2 nanostructured thin films decorated with multiply twinned Ag-(0) achieved improved photoelectrochemical water splitting due to the additional induction of a plasmonic effect. The photocatalytic properties of TiO2 nanosheets and TiO2 nanostructured thin films were correlated with the presence of defect-twinned structures formed from Ag-(0) nanoparticles with a narrow size distribution, tuned to between 10 and 20 nm. This work opens up new possibilities for understanding the defects generated in Ag-TiO2 nanostructured materials and paves the way for connecting their morphology with their photocatalytic activity. 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/11104/0330510
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