Registration Number
0219U004770,
0116U001736
, R & D reports
Title
Patterns of formation of structured materials from silicon (IV) oxide and compounds of vanadium
popup.stage_title
Head
Musov Oleg Petrovich,
Registration Date
05-11-2019
Organization
State higher educational entity "Ukrainian State University of Chemical Technology"
popup.description2
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.
Product Description
popup.authors
Каюн Ігор Георгійович
Клименко Олександр Павлович
Лускань Катерина Вікторівна
Мисов Олег Петрович
Олійник Ольга Юріївна
Тараненко Юрій Карлович
Фурса Ольга Олександрівна
popup.nrat_date
2020-04-02
