Получение, структура и фотокаталитическая активность нанокомпозитов на основе оксида церия

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.

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