Number of the records: 1
Simultaneous Sc-doping and suboxide transformation of anatase TiO2 nanoparticles
- 1.
SYSNO ASEP 0617308 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Simultaneous 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, ORCIDNumber of authors 0 Article number 114831 Source Title Materials Characterization. - : Elsevier - ISSN 1044-5803
Roč. 222, APR (2025)Number of pages 15 s. Language eng - English Country NL - Netherlands Keywords Anatase ; Electron energy loss spectroscopy ; Nanoparticles ; Ti3O5 ; Titanium suboxides ; X-ray photoelectron spectroscopy Subject RIV CA - Inorganic Chemistry OECD category Inorganic and nuclear chemistry R&D Projects GA18-15613S GA ČR - Czech Science Foundation (CSF) LM2023066 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UACH-T - RVO:61388980 UT WOS 001427045100001 EID SCOPUS 85217388481 DOI https://doi.org/10.1016/j.matchar.2025.114831 Annotation Self-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. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2026 Electronic address https://doi.org/10.1016/j.matchar.2025.114831
Number of the records: 1