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Information × Registration Number 0223U001266, 0120U100477 , R & D reports Title Nanocomposites of transition metals based on synthetic humic substances with functional optical, magnetic and enhanced therapeutic properties popup.stage_title Head Litvin Valentyna A., Registration Date 26-01-2023 Organization Bohdan Khmelnytsky National University of Cherkasy popup.description2 Research object is a series of synthetic humic substances obtained from various phenolic precursors; metal-organic and metal-carbon nanocomposites (Au, Ag, Cu, Pd, Co, Ni, Fe) based on synthetic humic substances. New and original methods of obtaining various types of synthetic humic substances have been developed. Their properties are analogues of natural humic and fulvic acids, but characterized by controlled and reproducible properties. A comprehensive study of their properties was carried. The obtained synthetic humic substances were used as reducing agents and stabilizers in the synthesis of silver and gold nanoparticles. Using a complex of complementary methods, the regularities of the formation of silver and gold nanoparticles in solutions of synthetic humic substances were established. The kinetics and mechanism of both the most elementary act of the reduction process and the subsequent stages of growth, aggregation and coagulation of particles were thoroughly studied, which contributed to the creation of the technology targeted production of nanomaterials with given catalytic, optical and therapeutic properties. In addition, the obtained synthetic humic substances were used as a carbon matrix for the preparation of metal-carbon and bimetal-carbon nanocomposites of transition metals by pyrolysis of the humates of the corresponding metals in a reducing atmosphere. Since the unique properties of nanocomposites are largely determined by their morphological characteristics, optimal conditions for obtaining transition metal nanoparticles with a given size and shape were found. A comprehensive study of the catalytic, optical, magnetic, sorption, and biological properties of nanocomposites based on synthetic humic substances was conducted, which made it possible to show ways of practical use of the obtained materials. Product Description popup.authors Baryshnikov Glib Volodymyrovych Heleveria Dmytro Hlushko Daria Zaporozhets Alyona Volodymyrivna Karaush-Karmazin Nataliia M. Kovalenko Dariya Lyashenko Andriy Ozivska Inna Oleksandrivna Petrova Tetiana V. Posypaiko Kseniia Semenova Maryna Ihorivna Smetenko Yulia Stanislavivna Sosiuk Oksana Sukovach (Kornienko) Tetyana Mykolayivna Cherniuk Mariana Shkunyda Diana Shchepak Dina popup.nrat_date 2023-01-26 Close