Наночастицы феррита меди с противообрастающей активностью

В настоящее время ферриты металлов являются многообещающим, но недостаточно исследованным классом узкозонных полупроводников для борьбы с биологическим обрастанием. В работе наночастицы, содержащие феррит меди (CuFe2O4) с массовой долей 55, 85 и 95 %, были получены при помощи электрического взрыва железной и медной проволок в смешанной атмосфере аргона и кислорода. Содержание CuFe2O4 варьировали диаметром проволок. По данным рентгенофазового анализа увеличение содержания железа в скрутке приводило к увеличению массовой доли феррита до 95 %. В частицах также обнаруживались фазы оксидов меди (I, II) и металлическая медь. Данные ЭДС анализа показали, что Cu и Fe распределены в частицах равномерно. В реакции разложения модельного красителя Конго красного установлено, что наночастицы, содержащие 85 масс. % CuFe2O4, обладали наибольшей фотохимической активностью (степень деколоризации 72 %) под действием видимого света. Наночастицы (85 масс. % CuFe2O4) продемонстрировали высокую антибактериальную активность в отношении устойчивого штамма MRSA ATCC 43300 (сокращение количества бактерий на 98,7 %). Кроме того, частицы продемонстрировали активность в отношении биопленок P. aeruginosa, что позволяет рассматривать их в качестве потенциальных противообрастающих агентов для изделий, контактирующих с жидкостями.

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