Simultaneous Sc-doping and suboxide transformation of anatase TiO2 nanoparticles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F25%3A00617308" target="_blank" >RIV/61388980:_____/25:00617308 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/44555601:13440/25:43899090

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1044580325001202" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1044580325001202</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matchar.2025.114831" target="_blank" >10.1016/j.matchar.2025.114831</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Simultaneous Sc-doping and suboxide transformation of anatase TiO2 nanoparticles

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Simultaneous Sc-doping and suboxide transformation of anatase TiO2 nanoparticles

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/GA18-15613S" target="_blank" >GA18-15613S: Integrace plasmonových kovových nanočástic s fotonickými TiO2 nanovrstvami pro synergické štěpení vody a environmentalní fotokatalýzu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materials Characterization

ISSN

1044-5803

e-ISSN

1873-4189

Svazek periodika

222

Číslo periodika v rámci svazku

APR

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

114831

Kód UT WoS článku

001427045100001

EID výsledku v databázi Scopus

2-s2.0-85217388481