Copper oxide (CuO) nanomaterials (NMs) of different size and morphology were synthesized by Chemical precipitation, Microwave irradiation and Hydrothermal method and characterized by TEM, BET, FTIR, XRD and EDX analysis. As synthesized CuO NMs were utilized for elimination of harmful dyes viz. Direct Red 81 (DR-81) and Coomassie Brilliant blue R-250 (BBR-250) and pathogenic bacteria (Staphylococcus aureus). Owing to their morphology, smaller size and relatively high surface area (40.320 m² g⁻¹), CuO NMs prepared by chemical precipitation method were observed to show better adsorption capacity for both the dyes (68.70 (DR-81) and 73.04 (BBR-250) mg g⁻¹). The influence of different experimental conditions was studied by the methodical assessments of various parameters such as pH, adsorbent dose, concentration and contact time. Moreover, different adsorption isotherms and pseudo-second order kinetic model were applied to understand the adsorption mechanism. Langmuir model was found to be best fit thus confirming the monolayer adsorption process. To ensure the practical utility of CuO NMs for organic waste removal, the adsorption studies were performed in the presence of different inorganic ions and real water samples. In addition, recovery of the dye and NMs were also carried out effectively by simple method, thus avoiding the secondary pollution. CuO NMs were observed to exhibit significant antibacterial activity against the human pathogenic bacteria. These studies demonstrated that synthesized CuO NMs showed good adsorption efficiency for the removal of harmful dyes and antimicrobial activity against the pathogenic bacteria, which vary as a function of size and surface area.

通过化学沉淀，微波辐射和水热法合成了不同尺寸和形貌的氧化铜（CuO）纳米材料，并通过TEM，BET，FTIR，XRD和EDX分析对其进行了表征。由于合成的CuO NM被用于消除有害染料，即。直接红81（DR-81）和考马斯亮蓝R-250（BBR-250）和致病菌（金黄色葡萄球菌）。由于其形态，较小的尺寸和相对较高的表面积（40.320 m ² g ^-1），观察到通过化学沉淀法制备的CuO NMs对两种染料（68.70（DR-81）和73.04（BBR）都表现出更好的吸附能力。 -250）毫克g ^-1）。通过对各种参数（如pH值，吸附剂剂量，浓度和接触时间）进行系统评估，研究了不同实验条件的影响。此外，采用不同的吸附等温线和伪二级动力学模型来了解吸附机理。发现Langmuir模型最合适，从而证实了单层吸附过程。为了确保将CuO NMs实际用于去除有机废物，在存在不同无机离子和真实水样的情况下进行了吸附研究。此外，染料和NMs的回收也可以通过简单的方法有效地进行，从而避免了二次污染。观察到CuO NMs对人类病原菌表现出显着的抗菌活性。