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0219U004770,
0116U001736
,
Patterns of formation of structured materials from silicon (IV) oxide and compounds of vanadium
Musov Oleg Petrovich,
05-11-2019
State higher educational entity "Ukrainian State University of Chemical Technology"
The object of research - theoretical and experimental basis for the synthesis of particles for the creation of structured materials of silicon (IV) oxide and compounds of vanadium. The purpose of the work is to develop a method for the synthesis of structured materials from silicon (IV) oxide and compounds of vanadium. Methods of research - scanning electron microscopy, turbidimetric studies, computer simulation modeling, X-ray diffraction analysis, differential-thermal analysis. It is determined: the conditions for obtaining the maximum solid phase SiO2, the least-mean-square deviation of the particle diameter can be obtained with the duration of adding tetraethoxysilane (TEOS) less than 50 s, the maximum storage life of the purified TEOS is 96 hours, the effect of the concentration of V2O5 and the nature of the alkali as a precipitator and NH4OH concentration on the size of vanadium dioxide particles. It was found that after thermal treatment at a temperature above 850°C (NH4) 2V4O9 it becomes a nanocrystalline vanadium dioxide with a characteristic phase transition of a semiconductor-metal at a temperature of 68°C. As a result of the DPRK, methods have been developed: to obtain spherical particles of silicon (IV) oxide with high uniformity in size, to obtain film photonic crystals of self-assembly of submicron particles (the material synthesized by this method consists of silicon (IV) oxide and is structured), the synthesis of structured materials from silicon (IV) oxide and compounds of vanadium. Areas of application of the results of work: M 72.1 Research and experimental development in the field of natural and technical sciences.
Каюн Ігор Георгійович
Клименко Олександр Павлович
Лускань Катерина Вікторівна
Мисов Олег Петрович
Олійник Ольга Юріївна
Тараненко Юрій Карлович
Фурса Ольга Олександрівна
2020-04-02
Updated: 2025-12-11
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