Effects of neutron irradiation at different fluencies on nanosized anatase titanium dioxide

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F22%3A00363710" target="_blank" >RIV/68407700:21670/22:00363710 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.radphyschem.2022.109988" target="_blank" >https://doi.org/10.1016/j.radphyschem.2022.109988</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.radphyschem.2022.109988" target="_blank" >10.1016/j.radphyschem.2022.109988</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effects of neutron irradiation at different fluencies on nanosized anatase titanium dioxide

Popis výsledku v původním jazyce

Nanosized anatase polymorph of titanium dioxide was irradiated at normal conditions at different fluencies. Neutron irradiation was conducted at IBR-2 high-flux pulsed reactor at fluencies of 4.0 x 10(12) n/cm(2), 8.0 x 10(12) n/cm(2), 1.3 x 1013 n/cm(2), 4.0 x 10(14) n/cm(2) and 1015 n/cm2 (neutron energy E > 0.1 MeV). X-ray diffraction, neutron diffraction analysis, Raman and FTIR spectroscopy were used to examine the crystal structure and the surface of the anatase polymorph after irradiation. X-ray and neutron diffraction analysis show deviations in the values for the unit cell volume with increasing fluence and some anneling effect for the highest fluence. Raman spectra analysis show that no phase transition occurs in the material at all irradiation fluences investigated. FTIR spectra analysis unveil that water molecules adsorbed on the material surface disintegrate under the influence of fast neutrons, converting to briged hydroxils on the surface of TiO2.

Název v anglickém jazyce

Effects of neutron irradiation at different fluencies on nanosized anatase titanium dioxide

Popis výsledku anglicky

Nanosized anatase polymorph of titanium dioxide was irradiated at normal conditions at different fluencies. Neutron irradiation was conducted at IBR-2 high-flux pulsed reactor at fluencies of 4.0 x 10(12) n/cm(2), 8.0 x 10(12) n/cm(2), 1.3 x 1013 n/cm(2), 4.0 x 10(14) n/cm(2) and 1015 n/cm2 (neutron energy E > 0.1 MeV). X-ray diffraction, neutron diffraction analysis, Raman and FTIR spectroscopy were used to examine the crystal structure and the surface of the anatase polymorph after irradiation. X-ray and neutron diffraction analysis show deviations in the values for the unit cell volume with increasing fluence and some anneling effect for the highest fluence. Raman spectra analysis show that no phase transition occurs in the material at all irradiation fluences investigated. FTIR spectra analysis unveil that water molecules adsorbed on the material surface disintegrate under the influence of fast neutrons, converting to briged hydroxils on the surface of TiO2.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Radiation Physics and Chemistry

ISSN

0969-806X

e-ISSN

1879-0895

Svazek periodika

194

Číslo periodika v rámci svazku

109988

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

000792905900001

EID výsledku v databázi Scopus

2-s2.0-85123923733