Pristine CdO and chromium (Cr)-cobalt (Co) co-doped CdO nanowires via a facile co-precipitation protocol were synthesized and characterized with different analytical techniques to investigate its physical, photocatalytic, antibacterial, and electrochemical properties. The co-doping of Cr-Co into CdO matrix and their structural variations were confirmed by X-ray diffraction (XRD) data. Fourier transform infrared (FTIR) and Raman spectra also confirmed the doping of Cr and Co ions. The energy bandgap was extracted by employing different methods using UV–vis results, exhibited redshift by decreasing Co contents and blue shift by increasing Cr concentration. Scanning electron microscopy (SEM) images confirmed the preparation of nanowires. The photocatalytic and antibacterial experiments results showed the higher photodegradation efficiency against methylene blue (MB) (99.5%), methyl orange (MO) (90.6%), rhodamine-B (RhB) (87.5%), safranin-O (SF) (87.5%), and methyl red (MR) dyes (99.99%), after 60 min of sunlight illumination and the higher zone of inhibition (ZOI) against Klebsiella pneumoniae and Staphylococcus aureus for optimal doped Cd_0.90Co_0.05Cr_0.05O (Cd4) sample. The recyclability tests using Cd4 catalyst were exhibited higher stability up to 5th cycles. The higher ability to decompose dyes and kill bacteria is due to the generation of reactive species, confirmed by the radical trapping experiments. The electrochemical measurements were revealed that the Cd4 sample has a higher specific capacitance of 500 F/ g^− 1 at 10 mV/s scan rate, excellent energy density 72 Wh/Kg, and greater power density of 4800 W kg^− 1 at a current density of 0.1 A/g. Furthermore, the properties of CdO can be tuned by co-doping for making it a useful material for photocatalyst, supercapacitors electrodes, and antibacterial applications.

通过简单的共沉淀方案合成了原始的 CdO 和铬 (Cr)-钴 (Co) 共掺杂的 CdO 纳米线，并用不同的分析技术对其进行了表征，以研究其物理、光催化、抗菌和电化学性能。X 射线衍射 (XRD) 数据证实了 Cr-Co 共掺杂到 CdO 基体中及其结构变化。傅里叶变换红外 (FTIR) 和拉曼光谱也证实了 Cr 和 Co 离子的掺杂。能带隙是通过使用 UV-vis 结果采用不同方法提取的，通过降低 Co 含量显示红移，通过增加 Cr 浓度显示蓝移。扫描电子显微镜 (SEM) 图像证实了纳米线的制备。肺炎克雷伯菌和金黄色葡萄球菌的最佳掺杂 Cd _0.90 Co _0.05 Cr _0.05 O (Cd4) 样品。使用 Cd4 催化剂的可回收性测试表现出更高的稳定性，直至第 5 次循环。自由基捕获实验证实了更高的分解染料和杀灭细菌的能力是由于活性物种的产生。电化学测量结果表明，Cd4 样品在 10 mV/s 扫描速率下具有500 F/ g ^{− 1}的更高比电容、72 Wh/Kg 的优异能量密度和 4800 W kg ^{− 1 的}更大功率密度电流密度为 0.1 A/g。此外，CdO 的性质可以通过共掺杂来调节，使其成为光催化剂、超级电容器电极和抗菌应用的有用材料。