vestichИзвестия Национальной академии наук Беларуси. Серия химических наукProceedings of the National Academy of Sciences of Belarus, Chemical Series1561-83312524-2342The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1561-8331-2020-56-2-150-157vestich-578Research ArticleНЕОРГАНИЧЕСКАЯ ХИМИЯINORGANIC CHEMISTRYВзаимодействие оксидов титана с гидроксидом натрия в гидротермальных условияхInteraction of titanium oxide with sodium hydroxide at hydrothermal conditionsМурашкевичА. Н.MurashkevichA. N.

Мурашкевич Анна Николаевна – д-р техн. наук, профессор

ул. Свердлова, 13а , 220006, Минск

Anna N. Murashkevich – D. Sc. (Engineering), Professor

13a , Sverdlov Str., 220006, Minsk

man@belstu.byБелорусский государственный технологический университетБеларусьBelarusian State Technological UniversityBelarus202006062020562150157Copyright © Мурашкевич А.Н., 20202020Мурашкевич А.Н.Murashkevich A.N.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestichem.belnauka.by/jour/article/view/578

Титанаты натрия получали с использованием тетрабутоксида титана (ТБТ), тетроизопропоксида титана (ТИПТ), гидратированного диоксида титана (полученного гидролизом алкоксида титана) или воздушно высушенного золя TiO2 методом гидротермальной обработки при молярном отношении (ТБТ, ТИПТ, TiO2) : NaOH, равном 1: (10–80), температуре 130–180 °С и времени 24–72 ч. Свойства полученных образцов охарактеризованы с использованием адсорбционного метода, рентгенофазового анализа, растровой электронной микроскопии. Оценивали фотокаталитические свойства наноструктурированного титаната в Н-форме по реакции разложения Родамина FL–BМ под действием УФ-излучения (К = 0,03–0,05 мин–1) и электрореологические свойства, согласно которым полученный частично гидролизованный титанат натрия демонстрирует в составе 5 % по наполнителю электрореологических дисперсий величину напряжения сдвига 50–60 Па и плотности токов утечки 1,0–1,5 мкА/см2 при напряженности электрического поля Е = 4 кВ/см и скорости сдвига 17,1 с–1.

Sodium titanates were obtained by hydrothermal treatment using titanium tetrabutoxide (ТBT), titanium tetroisopropoxide (TIPT), hydrated titanium dioxide (prepared by hydrolysis of titanium alkoxide) or air-dried TiO2 sol with a molar ratio of TBT/TIPT/TiO2: NaOH equal to 1:10–80, at the temperature 130–180 °C and treatment time 24–72 h. Samples were characterized by the adsorption method, X-ray phase analysis, scanning electron microscopy. The photocatalytic properties of nanostructured titanate in the H-form in the process of Rhodamine FL–BM photodegradation under UV-irradiation (K = 0.03–0.05 min–1), as well as the electrorheological properties, were evaluated. Partially hydrated sodium titanates as a filler of the electrorheological dispersion (the filler content of dispersion was 5 %) exhibited the shear stress of 50–60 Pa and the leakage current density of 1.0–1.5 μA/cm2 at an electric field strength of E = 4 kV/cm at a shear rate of 17.1 s–1.

титанат натриядиоксид титанаэлектрореологические дисперсиигидротермальная обработкаморфологияфотокатализsodium titanatetitanium dioxideelectrorheological dispersionshydrothermal treatmentmorphologyphotocatalysisАвтор благодарит сотрудника лаборатории реофизики и макрокинетики Института теплои массообмена им. А. В. Лыкова Национальной академии наук Беларуси З. А. Новикову за проведение измерений электрореологических свойств дисперсий на основе полученных образцов.The author thanks Z. A. Novikov – the employee of the laboratory of rheophysics and macrokinetics of the A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus for taking measurements of the electrorheological properties of dispersions based on the obtained samples.ReferencesYin, J. Electrorhelogical properties of titanate nanotube suspensions / J. Yin, X. Zhao // J. 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The authors declare that there are no conflicts of interest present.