The construction of CdO-based nano-heterojunction photocatalyst gathers more attention since pure CdO suffers rapid e⁻/h⁺ pair recombination rate. In this study, CdO/CeO₂ was fabricated by sono-chemical synthesis. HRTEM depicts the decoration of CeO₂ on nanoplates like CdO. The crystalline structure of CdO/CeO₂ nanocomposites (NCs) with coexistence of CdO and CeO₂ was revealed by X-ray powder diffraction (XRD) analysis. The chemical states of NCs were determined by X-ray photoelectron spectroscopy (XPS). The narrow bandgap of 2.67 eV enhance the visible light photon absorption ability. In accordance with Brunauer-Emmett-Teller (BET) surface area analysis, it is evident that compared to individual particles the prepared NCs have a high surface area of 260.73 m²/g. The type II interface in CdO/CeO₂ NCs facilitates e⁻/h⁺ pair migration and charge carrier separation. The reduced e⁻/h⁺ pair recombination was ensured by photoluminescence analysis. Under visible light, the NCs showed excellent photocatalytic activity compared to individual particles. The particles showed 87.6% degradation of methylene blue (MB) in 180 min. The scavengers study revealed the major role of ·OH and h⁺ in MB photodegradation. The CdO/CeO₂ NCs possessed high stability even after six cycles and XRD of recycled particles confirmed the resistance of NCs towards photo-corrosion. In addition, NCs showed excellent anti-bacterial activity. Finally, it could be suggested that CdO/CeO₂ NCs can find potential applications in industrial water treatment processes and in self cleaning materials due to its high stability and active nature.

由于纯 CdO 具有快速的 e ^- /h ⁺对复合率，因此基于 CdO 的纳米异质结光催化剂的构建受到更多关注。在本研究中，CdO/CeO ₂是通过声化学合成法制备的。HRTEM 描绘了像 CdO 这样的纳米片上的 CeO ₂装饰。氧化镉/铈的晶体结构_2层的纳米复合材料（NCS）与氧化镉和铈的共存₂通过 X 射线粉末衍射 (XRD) 分析揭示。通过 X 射线光电子能谱 (XPS) 确定 NCs 的化学状态。2.67 eV 的窄带隙增强了可见光光子吸收能力。根据Brunauer-Emmett-Teller (BET) 表面积分析，很明显，与单个颗粒相比，制备的NCs 具有260.73 m ² /g的高表面积。CdO/CeO ₂ NCs 中的II 型界面促进了 e ^- /h ⁺对迁移和电荷载流子分离。减少的 e ^- /h ⁺通过光致发光分析确保配对重组。在可见光下，与单个颗粒相比，NCs 表现出优异的光催化活性。颗粒在 180 分钟内显示出 87.6% 的亚甲蓝 (MB) 降解。清除剂研究揭示了·OH 和h ⁺在MB 光降解中的主要作用。即使经过六次循环，CdO/CeO ₂ NCs 仍具有高稳定性，并且回收颗粒的 XRD 证实了 NCs 对光腐蚀的抵抗力。此外，NCs显示出优异的抗菌活性。最后，CdO/CeO ₂ NCs 由于其高稳定性和活性，可以在工业水处理过程和自清洁材料中找到潜在的应用。