UNIV. NEWS. NORTH-CAUCAS. REG. TECHNICAL SCIENCES SERIES. 2023; 3: 74-79
http://dx.doi.org/10.17213/1560-3644-2023-3-74-79
Study of the effect of the amount of precursor on the synthesis of cobalt (II) ferrite by sol-gel method
Nina P. Shabelskaya – Dr. Sci. (Eng.), Associate Professor, Head of the Department «Ecology and Industrial Safety», Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia, Lead Research, Academy of Biology and Biotechnology SFEDU, nina_shabelskaya@mail.ru
Asatullo M. Rajabov – Graduate Student, Department «Ecology and Industrial Safety», Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia.
Vitaly A. Taranushich – Dr. Sci. (Eng.), Professor, Department «Chemical Technologу», Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia, vitaliy.taranushich@bk.ru
Natalia D. Yatsenko – Dr. Sci. (Eng.), Professor, Head of the Department «Materials, Technologies and Technical Regulation of Road Construction», Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia.
Anna V. Arzumanova – Cand. Sci. (Eng.), Associate Professor, Department «Ecology and Industrial Safety», Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia.
Julia A. Gaidukova – Cand. Sci. (Chem.), Associate Professor, Department «Ecology and Industrial Safety», Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia.
Vera A. Ulyanova – Student, Department «Chemical Technologу», Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia.
Abstract
The paper considers the conditions for the synthesis of organo-inorganic composite materials based on oxide compounds of iron (III) and cobalt (II) with a developed surface. For the first time, the effect of the introduced precursor – ammonia solution – on the completeness of the reaction of the formation of the structure of cobalt (II) ferrite on the surface of an organic carrier was studied. It was found that the obtained materials contain a phase of cobalt (II) ferrite, the most complete process of structure formation proceeds with the amount of introduced ammonia close to stoichiometric. In case of insufficient amount of introduced ammonia, the samples are heterogeneous, contain additionally complex oxides of iron and cobalt. The introduction of ammonia in excess of stoichiometric reduces the yield of the target product. The obtained materials were characterized using X-ray phase analysis, the Scherrer method. The mechanism of formation of composite materials, including the stage of formation of metal hydroxides and their subsequent thermal decomposition, is proposed. The obtained data make it possible to synthesize technically important materials in economical modes.
Acknowledgements: the research was carried out with the support of the project of the Ministry of Science and Higher Education of the Russian Federation to support the youth laboratory "Agrobiotechnologies for improving soil fertility and agricultural product quality" within the framework of the development program of the interregional scientific and educational center of the South of Russia, # Labnots 21-01AB. The authors express their gratitude to the employee of the Center for Collective Use of the South Russian State Polytechnic University (NPI) named after M.I. Platov, Candidate of Technical Sciences, A.N. Yatsenko, for assistance in shooting and decoding the RF data and performing microscopic studies.
For citation: Shabelskaya N.P., Radzhabov A.M., Taranushich V.A., Yatsenko N.D., Arzumanova A.V., Gaidukova Yu.A., Ulyanova V.A. Study of the effect of the amount of precursor on the synthesis of cobalt (II) ferrite by sol-gel method. Izv. vuzov. Sev.-Kavk. region. Techn. nauki=Bulletin of Higher Educational Institutions. North Caucasus Region. Technical Sciences. 2023;(3):74-79. (In Russ.). http://dx.doi.org/ 10.17213/1560-3644-2023-3-74-79
Keywords: composites with cobalt (II) ferrite, oxide compounds based on iron (III)-cobalt (II), nanostructured materials, spinel structure formation, biochars
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