Abstract In the present work, titanium dioxide nanoparticles and Cu/TiO2/bentonite composites were prepared by using thermal decomposition and reduction method. The samples were characterized by FTIR, XRD, TGA and SEM. The photocatalytic properties of the prepared composites were studied for the degradation of deltamethrin. Several factors on degradation process were investigated such as total time of light irradiation, pH of the solution and concentration of catalyst to optimize the reaction conditions. It was observed that the prepared metal doped composite possesses high efficiency for the degradation of the insecticide. The degradation process follows first order kinetics. Antibacterial activity of the synthesized composites was also studied and the result shows that obtained composites possess good antibacterial activity.

中文翻译：

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Cu/TiO2/膨润土复合光催化降解溴氰菊酯

摘要 本工作采用热分解还原法制备了二氧化钛纳米颗粒和Cu/TiO2/膨润土复合材料。通过FTIR、XRD、TGA和SEM对样品进行表征。研究了制备的复合材料对溴氰菊酯降解的光催化性能。研究了影响降解过程的几个因素，如光照射的总时间、溶液的 pH 值和催化剂浓度，以优化反应条件。观察到制备的金属掺杂复合物具有高效的杀虫剂降解能力。降解过程遵循一级动力学。还对合成的复合材料的抗菌活性进行了研究，结果表明所获得的复合材料具有良好的抗菌活性。