Влияние морфологии и состава триметаллических PtCuAu/C катализаторов на активность и стабильность в реакции окисления метанола
Аннотация
Проведено исследование влияния способа получения триметаллических PtCuAu/C катализаторов на их активность в реакции окисления метанола.
Методами рентгеновской дифракции и просвечивающей электронной микроскопии изучены структурные характеристики синтезированных триметаллических катализаторов. Наночастицы материала, полученного гальваническим методом синтеза, имеют размер в два раза больше (~ 6 нм), чем наночастицы материала, полученного совместным осаждением прекурсоров металлов. По результатам ускоренного стресс-тестирования катализаторов установлено, что материал, полученный гальваническим методом замещения атомов меди на золото, обладает
большей активностью в реакции окисления метанола после стресс-тестирования, чем коммерческий Pt/C аналог.
Данное исследование показывает перспективность получения и использования многокомпонентных платиносодержащих наночастиц, нанесенных на углеродный носитель, как эффективных катализаторов для использования в метанольных топливных элементах.
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Литература
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