Počet záznamů: 1
Simultaneous Sc-doping and suboxide transformation of anatase TiO2 nanoparticles
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SYSNO ASEP 0617308 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Simultaneous Sc-doping and suboxide transformation of anatase TiO2 nanoparticles Tvůrce(i) Zenou, V. Y. (IL)
Čaplovičová, M. (SK)
Kormunda, M. (CZ)
Bakardjieva, Snejana (UACH-T) SAI, RID, ORCIDCelkový počet autorů 0 Číslo článku 114831 Zdroj.dok. Materials Characterization. - : Elsevier - ISSN 1044-5803
Roč. 222, APR (2025)Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Anatase ; Electron energy loss spectroscopy ; Nanoparticles ; Ti3O5 ; Titanium suboxides ; X-ray photoelectron spectroscopy Vědní obor RIV CA - Anorganická chemie Obor OECD Inorganic and nuclear chemistry CEP GA18-15613S GA ČR - Grantová agentura ČR LM2023066 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Omezený přístup Institucionální podpora UACH-T - RVO:61388980 UT WOS 001427045100001 EID SCOPUS 85217388481 DOI https://doi.org/10.1016/j.matchar.2025.114831 Anotace 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. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2026 Elektronická adresa https://doi.org/10.1016/j.matchar.2025.114831
Počet záznamů: 1