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"10.29235/1561-8331-2022-58-4-351-359vestich-759Research ArticleФИЗИЧЕСКАЯ ХИМИЯPHYSICAL CHEMISTRYПолучение, структура и фотокаталитическая активность нанокомпозитов на основе оксида церияPreparation, structure and photocatalytic activity of nanocomposites based on cerium oxideМацукевичИ. В.MatsukevichI. V.

Мацукевич Ирина Васильевна – кандидат химических наук, доцент, заведующий лабораторией Институт общей и неорганической химии цент, заведующий лабораторией

Ул. Сурганова, 9/1, 220072, Минск

Matsukevich Irina V. – Ph. D. (Chemistry), Associate Professor, Head of the Laboratory.

9/1, Surganov str., 220072, Minsk

irinavas.k1975@gmail.comЮндельЕ. Д.YundelE. D.

Юндель Евгения Дмитриевна – лаборант.

Ул. Свердлова, 13а, 220006, Минск

Yundzel Yauheniya D. – Laboratory Assistant.

13а, Sverdlov str., 220006, Minsk

evgenia.yundel@mail.ruКулиничН. В.KulinichN. V.

Кулинич Наталья Владимировна – научный сотрудник.

Ул. Сурганова, 9/1, 220072, Минск

Kulinich Natallia V. – Researcher.

9/1, Surga nov str., 220072, Minsk

kulinich.55@yandex.byЕгороваЮ. А.YahoravaY. A.

Егорова Юлия Андреевна – научный сотрудник.

Ул. Акад. Купревича, 10, 220141, Минск

Yahorava Yuliya A. – Researcher.

10, Akad. Kuprevich str., 220141, Minsk

egorova.y_a@mail.ruКульбицкаяЛ. В.KulbitskayaL. V.

Кульбицкая Людмила Викторовна – научный сотрудник.

Ул. Сурганова, 9/1, 220072, Минск

Kulbitskaya Ludmila V. – Research Assistant.

9/1, Surganov str., 220072, Minsk

anna119@igic.bas-net.byКузнецоваТ. Ф.KuznetsovaT. F.

Кузнецова Татьяна Федоровна – кандидат химических наук, доцент, заведующий лабораторией

Ул. Сурганова, 9/1, 220072, Минск

Kuznetsova Tatyana F. – Ph. D. (Chemistry), Associate Professor, Head of the Laboratory.

9/1, Surganova str., 220072, Minsk

tatyana.fk@gmail.comИнститут общей и неорганической химии, Национальная академия наук БеларусиInstitute of General and Inorganic Chemistry, National Academy of Sciences of BelarusБелорусский государственный технологический университетBelarusian State Technological UniversityФизико-технический институт, Национальная академия наук БеларусиPhysical-Technical Institute, National Academy of Sciences of Belarus202228112022584351359Copyright © Мацукевич И.В., Юндель Е.Д., Кулинич Н.В., Егорова Ю.А., Кульбицкая Л.В., Кузнецова Т.Ф., 20222022Мацукевич И.В., Юндель Е.Д., Кулинич Н.В., Егорова Ю.А., Кульбицкая Л.В., Кузнецова Т.Ф.Matsukevich I.V., Yundel E.D., Kulinich N.V., Yahorava Y.A., Kulbitskaya L.V., Kuznetsova T.F.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/759

Методом самораспространяющегося высокотемпературного синтеза синтезированы мезопористые порошки СeO2, MgO и нанокомпозиты на их основе, исследовано взаимное влияние оксида магния и оксида церия на кристаллическую структуру, микроструктуру и морфологию полученных материалов. Установлено, что СeO2 формируется на поверхности оксида магния, при этом сохраняется развитая поверхность материала. Установлено, что размеры кристаллитов СеО2 в составе нанокомпозитов изменяются незначительно и составляют от 6,5 до 7,4 нм, а значения удельной поверхности и среднего диаметра пор исследованных образцов зависят от состава и изменяются в диапазонах 19‒41 м2/г и 11,9‒19 нм соответственно. Наибольшая эффективность фотодеградации красителей кислотного телона синего и прямого ярко-голубого наблюдается для образцов MgO–CeO2 (30 мол.%) и MgO–CeO2 (50 мол.%) – 98,5 и 92,5 % соответственно c учетом эффекта прямого фотолитического разложения под воздействием ультрафиолетового излучения.

Mesoporous CeO2 and MgO powders and nanocomposites based on them were synthesized by the method of self-propagating high-temperature synthesis, and the mutual influence of magnesium oxide and cerium oxide on the crystal structure, microstructure, and morphology of the obtained materials was studied. It has been established that CeO2 is formed on the surface of magnesium oxide, while the developed surface of the material is preserved. It has been established, that the sizes of CeO2 crystallites in the composition of nanocomposites change insignificantly and range from 6.5 to 7.4 nm, while the values of the specific surface area and average pore diameter of the studied samples depend on the composition and vary in the ranges of 19–41 m2/g and 11.9‒19 nm, respectively. The highest efficiency of photodegradation of dyes of acid telon blue and direct bright blue is observed for samples of MgO–CeO2 (30 mol.%) and MgO–CeO2 (50 mol.%) ‒ 98.5 and 92.5 %, respectively, taking into account the effect of direct photolytic decomposition under the influence of ultraviolet radiation.

оксид церияоксид магнияфотокатализатормикроструктураадсорбционные свойствамезопористый порошокcerium oxidemagnesium oxidephotocatalystmicrostructureadsorption propertiesmesoporous powderАвторы выражают благодарность А. В. Поспелову (БГТУ, ИОНХ НАН Беларуси) за изучение образцов с помощью сканирующей электронной микроскопии. Работа выполнена в рамках международного белорусско-сербского научно-технического проекта «Разработка и применение для защиты окружающей среды наноструктурных материалов на основе титанатов магния» (2022–2024 гг., договор с БРФФИ № Х22СРГ-010)The authors are grateful to A. V. Pospelov (BSTU, IGIC NAS of Belarus) for the study of the samples by scanning electron microscopy. 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The authors declare that there are no conflicts of interest present.