Структуры для фотокатализа на основе ZnO с наночастицами Ag
Аннотация
Цель статьи: Наночастицы серебра являются перспективным компонентом для улучшения каталитических характеристик полупроводниковых материалов за счет эффекта плазмоники. Целью данной работы установление закономерностей влияния осажденного серебра на каталитическую активность оксида цинка.
Экспериментальная часть: Проведен синтез образцов с различным содержанием серебра от 0.2 до 2 мас. %. Для характеризации поверхности образцов были получены СЭМ снимки и АСМ сканы порошков. Для анализа состава были получены EDX спектры и элементное картирование. В результате было подтверждено равномерное осаждение серебра на поверхности оксида цинка и соответствие расчетного состава с полученным. Активность катализатора оценивали по степени деградации органического красителя Родамина 6G.
Выводы: Проанализирован эффект осажденного серебра на поверхность ZnO. При осаждении 0.2 мас. % серебра активность возрастает на 58 %, а при добавлении 2 мас. % приводит к росту активности на 92 %. Согласно полученным данным, было установлено положительное влияние осажденного серебра на фотокаталитическую активность оксида цинка. Зависимость изменения активности от количества серебра выходит на насыщение при достижении 2 мас. % серебра.
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Литература
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