In this study, a series of CuO/CdS composites were synthesized by thermal oxidation and successive ionic layer adsorption and reaction (SILAR). The as-prepared CuO/CdS composites were investigated by x-ray diffraction (XRD), field emission high-resolution scanning electron microscopy (FESEM) and energy-dispersive spectrometry. Their photocatalytic activity was investigated by monitoring the degradation of methylene blue (MB) under ultraviolet and visible light irradiation. The XRD pattern indicated that the precursor was cubic-phase CuO and Cu₂O. FESEM results indicate that changes in annealing time and temperature have an effect on morphology, but the nanowire structures are preserved. The growth mechanism of the CuO nanowires is discussed in detail. Furthermore, the photocatalytic degradation rate of the MB, determined using an ultraviolet-visible spectrophotometer (UV-vis, UV-2600, Shimadzu), indicates that CdS can significantly improve the absorption of visible light from the sun.

在这项研究中，通过热氧化和连续离子层吸附反应（SILAR）合成了一系列 CuO/CdS 复合材料。通过 X 射线衍射 (XRD)、场发射高分辨率扫描电子显微镜 (FESEM) 和能量色散光谱法研究了所制备的 CuO/CdS 复合材料。通过在紫外和可见光照射下监测亚甲蓝 (MB) 的降解来研究它们的光催化活性。XRD图谱表明前驱体为立方相CuO和Cu ₂O. FESEM 结果表明，退火时间和温度的变化对形态有影响，但纳米线结构得以保留。详细讨论了 CuO 纳米线的生长机制。此外，使用紫外-可见分光光度计（UV-vis，UV-2600，Shimadzu）测定的 MB 的光催化降解率表明，CdS 可以显着提高对太阳可见光的吸收。