In this paper, we report on the photodegradation of methylene blue (MB) using Er₂O₃-coated silicon nanowires as photocatalyst under UV and visible light irradiation. The silicon nanowires (SiNWs) were synthesized by Ag-assisted electroless etching on which Er was electrodeposited by Chronoamperometric method. The samples were analyzed by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). The results showed that Er₂O₃ was uniformly formed on silicon nanowires. The samples showed a high efficiency for the MB photodegradation especially, under UV light irradiation where a degradation rate of 100% was obtained after 90 min.

在本文中，我们报道了使用Er ₂ O ₃包覆的硅纳米线作为光催化剂在紫外和可见光照射下对亚甲基蓝（MB）的光降解。硅纳米线（SiNWs）是通过银辅助化学蚀刻法合成的，其上通过计时安培法电沉积了Er。通过扫描电子显微镜（SEM），能量色散X射线光谱（EDX）和X射线衍射（XRD）分析样品。结果表明，Er ₂ O ₃均匀地形成在硅纳米线上。样品表现出较高的MB光降解效率，尤其是在90分钟后紫外线降解率达到100％的UV光照射下。