Модифицированные медью наноструктурированные фотокатализаторы g-C₃N₄/TiO₂ для получения водорода из водных растворов глюкозы

   В данной работе представлены две методики синтеза композитных фотокатализаторов на основе графитоподобного нитрида углерода и диоксида титана, модифицированных медью, для получения водорода. Первый метод основывается на механическом смешении предварительно синтезированного g-C₃N₄ и TiO₂ (Evonik P25), модифицированного медью. Другой подход заключается в совместном прокаливании меламина и TiO₂ с последующим нанесением частиц меди. Образцы охарактеризованы с помощью рентгенофазового анализа (РФА), спектроскопии диффузного отражения в УФ и видимой областях (СДО), рентгеновской фотоэлектронной спектроскопии (РФЭС) и просвечивающей электронной микроскопии высокого разрешения (ПЭМ ВР). Полученные фотокатализаторы протестированы в реакции выделения водорода из водных растворов глюкозы под действием видимого света (440 нм). Самые высокие значения фотокаталитической активности равны 235 и 259 мкмоль·г^-1·ч^-1 для фотокатализаторов из первой и второй серии, соответственно. Наиболее активный фотокатализатор из первой серии сохраняет начальную скорость выделения водорода в течение 6 часов циклических испытаний.

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