Noble metal deposition is one of the most effective optimization methods for improving the photochemical properties of metal semiconductor oxides. In this paper, vertically aligned CuO nanowires were synthesized by means of a facile thermal oxidation method on Cu mesh. Subsequently, Ag nanoparticles were deposited on the surface of the CuO nanowires by vacuum coating, forming a CuO/Ag composite nanostructure. The morphology, phase structure, elemental distribution, wetting properties and optical properties of the CuO/Ag composite nanostructures were characterized by field emission scanning electron microscopy, x-ray diffraction, energy dispersion spectrometry, contact angle measurement and UV–Vis spectrophotometry, respectively. We also explored the effect of the amount of Ag nanoparticle deposition on the structure and properties of CuO/Ag composite nanomaterials. The CuO/Ag composite nanostructures exhibited better photocatalytic properties and were found to effectively degrade organic pollutants in sewage, after Ag nanoparticle deposition.

中文翻译：

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通过构建CuO / Ag复合纳米结构增强污水中有机污染物的光降解活性

贵金属沉积是用于改善金属半导体氧化物的光化学性质的最有效的优化方法之一。在本文中，通过一种方便的热氧化方法在铜网上合成了垂直排列的CuO纳米线。随后，通过真空涂覆将Ag纳米颗粒沉积在CuO纳米线的表面上，从而形成CuO / Ag复合纳米结构。分别通过场发射扫描电子显微镜，X射线衍射，能量色散谱，接触角测量和UV-Vis分光光度法对CuO / Ag复合纳米结构的形貌，相结构，元素分布，润湿性质和光学性质进行了表征。我们还探讨了Ag纳米颗粒沉积量对CuO / Ag复合纳米材料的结构和性能的影响。CuO / Ag复合纳米结构表现出更好的光催化性能，并被发现可在Ag纳米颗粒沉积后有效降解污水中的有机污染物。