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Information × Registration Number 0220U100253, 0117U002408 , R & D reports Title Scientific bases of creation of the nanostructured composite materials for cathodes of high capacity and powerful lithium power sources. popup.stage_title Head Myroniuk Ivan F., Доктор хімічних наук Registration Date 14-01-2020 Organization Vasyl Stefanyk Precarpathian National University popup.description2 Object of the study - dispersed and granular inorganic composite sorbents of the new generation based on anatase titanium dioxide, other metal oxides and magnetic ferrite spinels. The purpose of the work is to develop the scientific basis for the creation of hybrid and composite magnetocontrolled sorbents based on the anatase modification of titanium dioxide, other metal oxides and to study the processes of sorption extraction of heavy metal ions (Ni2 +, Cu2 +, Zn2 +, Cr6 +, Co2 +, Ba2 +) and radionuclides from the water environment. Research methods - physicochemical (X-ray analysis; IR spectroscopy; differential thermogravimetric analysis; scanning electron microscopy (SEM) and transmission electron microscopy (TEM); Mössbauer spectroscopy; magnetometry (VSM) method; chemical methods -analytical (acid-base titration, potentiometric titration, chemometric methods); methods of quantum-chemical and quasi-chemical modeling. The influence of arsenate, phosphate and carbonate groups on the sorbent morphology and its ability to extract Sr(II) cations from the water environment were investigated. Studies have confirmed that the introduction of a solution of titanium aquacomplex precursor [Ti(OH2)6]3+∙3Cl- and modifying reagents Na3AsO4 (for As-modified TiO2), Na3PO4 (for P-modified TiO2) and Na2CO3 (for modified TiO2) and C2-modified TiO2) allows to obtain, in the course of the liquid phase synthesis of TiO2, globular particles with chemically adsorbed arsenate, phosphate and carbonate groups on their surface. Magnetic spinel ferrites of different cationic composition have been synthesized as potential carriers for creating samples of magnetic sorbents of the shell-core type. Their structural and morphological characteristics have been analyzed and significant conclusions have been drawn about the conditions for obtaining magnetic nanoparticles with predetermined properties and increased adsorption activity. Product Description popup.authors Vasylyeva Hanna V. Hrytsuliak Bohdan V. Mandzyuk Volodymyr I. Mykytyn Igor M. Rachiy Bogdan I. Stetsyuk Svitlana I. Tatarchuk Tatiana R. Shiychuk Alexander V. popup.nrat_date 2020-04-02 Close