The influence of annealing temperature on properties of TiO2 based materials as adsorbents of radionuclides

0502834 - ÚACH 2020 RIV NL eng J - Journal Article
Motlochová, Monika - Slovák, V. - Pližingrová, Eva - Szatmáry, L. - Bezdička, Petr - Šubrt, Jan
The influence of annealing temperature on properties of TiO2 based materials as adsorbents of radionuclides.
Thermochimica Acta. Roč. 673, MAR (2019), s. 34-39. ISSN 0040-6031. E-ISSN 1872-762X
R&D Projects: GA TA ČR(CZ) TH02020110; GA MŠMT(CZ) LM2015073
Institutional support: RVO:61388980
Keywords : Titanium dioxide * Thermal analysis * Radionuclides * Ion-Exchange
OECD category: Inorganic and nuclear chemistry
Impact factor: 2.762, year: 2019
Method of publishing: Open access with time embargo

Two types of TiO2 based materials have been prepared from titanium oxysulfate hydrate via precipitation by cold solution of sodium hydroxide and drying at room temperature. The structural changes (especially crystallization into anatase, resp. sodium titanates) during heating up to 1000 degrees C were studied together with adsorption properties of prepared and annealed materials towards radionuclides Sr-85 and Cs-134. It was found that amorphous and non-annealed materials are able to adsorb higher amount of radionuclides, annealing always leads to decrease of adsorption efficiency. The amount of exchangeable sodium cations was found as the second factor determining adsorption properties of studied titania based materials.
Permanent Link: http://hdl.handle.net/11104/0294722