Abstract Novel meso-porous nanoparticles Au/TiO2 thin films were obtained by template synthesis using polyethylene glycol as filler medium. The materials were characterized by advanced analytical methods. The photocatalysts were employed for the photocatalytic degradation of tetracycline from aqueous solutions using UV-A light (λmax 330 nm). Various physico-chemical parametric studies enabled to deduce the mechanism of degradation. A significant percentage of tetracycline was mineralized by the treatment. The stability of thin film was evidenced with the repeated use of thin film. The degradation of tetracycline was proceeded predominantly by the OH radicals generated at the valance and conduction band of semiconductor.

中文翻译：

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金纳米颗粒/纳米柱TiO2介孔薄膜在UV-A光降解四环素中的作用

摘要 以聚乙二醇为填料介质，通过模板合成获得新型介孔纳米颗粒Au/TiO2薄膜。这些材料通过先进的分析方法进行了表征。该光催化剂用于使用 UV-A 光（λmax 330 nm）从水溶液中光催化降解四环素。各种物理化学参数研究能够推断降解机制。通过处理，显着百分比的四环素被矿化。薄膜的稳定性通过薄膜的重复使用得到证实。四环素的降解主要由半导体价带和导带处产生的OH自由基进行。