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Simultaneous Sc-doping and suboxide transformation of anatase TiO2 nanoparticles

  1. 1.
    SYSNO ASEP0617308
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleSimultaneous Sc-doping and suboxide transformation of anatase TiO2 nanoparticles
    Author(s) Zenou, V. Y. (IL)
    Čaplovičová, M. (SK)
    Kormunda, M. (CZ)
    Bakardjieva, Snejana (UACH-T) SAI, RID, ORCID
    Number of authors0
    Article number114831
    Source TitleMaterials Characterization. - : Elsevier - ISSN 1044-5803
    Roč. 222, APR (2025)
    Number of pages15 s.
    Languageeng - English
    CountryNL - Netherlands
    KeywordsAnatase ; Electron energy loss spectroscopy ; Nanoparticles ; Ti3O5 ; Titanium suboxides ; X-ray photoelectron spectroscopy
    Subject RIVCA - Inorganic Chemistry
    OECD categoryInorganic and nuclear chemistry
    R&D ProjectsGA18-15613S GA ČR - Czech Science Foundation (CSF)
    LM2023066 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    Method of publishingLimited access
    Institutional supportUACH-T - RVO:61388980
    UT WOS001427045100001
    EID SCOPUS85217388481
    DOI https://doi.org/10.1016/j.matchar.2025.114831
    AnnotationSelf-assembled agglomerates of 4 at.% Sc doped titania (4SDT) nanoparticles (NPs) were obtained using a simple water-based co-precipitation of titanium oxysulfate and scandium oxalate with urea at low temperature. Undoped samples were also prepared for comparison. Aberration-corrected scanning transmission electron microscopy and dual electron energy loss spectroscopy (DualEELS), showed that 4SDT agglomerates comprised self-assembled anatase NPs and sub-stoichiometric trititanium pentoxide (β-Ti3O5). The Ti3O5 either surrounded the anatase NPs as an ultra-thin outer layer or grew on the anatase surface in randomly distributed “nanoislands” closely connected to the Sc3+ ion. Heating to 800 °C under air caused the Sc3+ to segregate out the anatase lattice to form Sc-rich oxides (usually Sc4Ti3O12). Also, it was detected that the Ti4+ amount increased at the expense of Ti3+. X-ray photoelectron spectroscopy (XPS), employed to investigate the elements' surface composition, oxidation states, and electronic configurations, showed 4.6 % Sc relative to the sum of Sc and Ti, close to the nominal composition of 4 %. The O/Ti values found for 4SDT by XPS and EELS were 2.3 ± 0.1 and 2.2 ± 0.2, respectively.
    WorkplaceInstitute of Inorganic Chemistry
    ContactJana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931
    Year of Publishing2026
    Electronic addresshttps://doi.org/10.1016/j.matchar.2025.114831
Number of the records: 1  

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