CdO nanoparticles (NPs) were prepared through chemical co-precipitation method. The NPs were modified using different organic materials including starch, methyl cellulose, polyvinylpyrrolidone, ethylene glycol, tween 20, polyvinyl alcohol and gelatin. The NPs were characterized by UV–Vis spectrophotometer, TEM, EDX, XRD, FT-IR, particle size analyzer and zeta sizer. The TEM analysis showed that the NPs were hexagonal in shape. The NP’s photocatalytic activity was evaluated and it was slightly influenced by surface modification of NPs. FT-IR analysis confirmed that the particles were not deformed after photocatalysis. The half-life period of methylene blue (MB) dye degradation by CdO NPs was found to be higher than capped CdO NPs. The MB dye reduction rate was decreased with the order of CdO > CdO–T20 > CdO–PVA > CdO–EG > CdO–MC > CdO–S > CdO–PVP > CdO–G. The capped particles showed excellent photostability and reusability. Capped CdO NPs exhibited excellent anti-biofilm and antibacterial activities against Staphylococcus aureus and Pseudomonas aeruginosa of which CdO–T20 showed highest toxicity. The uncapped particles exhibited least photostability and the capping agents extend their stability against photo corrosion and increase the biocompatibility. The present approach can be used to prepare variety of nanohybrid particles depend on industrial applications.

中文翻译：

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各种封端剂对CdO NPs表面修饰的影响以及光催化性能，抗菌和抗生物膜活性的研究

通过化学共沉淀法制备了CdO纳米粒子。使用不同的有机材料对NP进行修饰，包括淀粉，甲基纤维素，聚乙烯吡咯烷酮，乙二醇，吐温20，聚乙烯醇和明胶。通过紫外可见分光光度计，TEM，EDX，XRD，FT-IR，粒度分析仪和Zeta分级仪对NP进行表征。TEM分析显示NP为六边形。评价了NP的光催化活性，并且该活性受到NP表面改性的影响很小。FT-IR分析证实了在光催化之后颗粒没有变形。发现CdO NP降解亚甲基蓝（MB）染料的半衰期高于封端的CdO NP。MB染料的还原率按CdO> CdO–T20> CdO–PVA> CdO–EG> CdO–MC>的顺序降低 CdO–S> CdO–PVP> CdO–G。封端的颗粒显示出优异的光稳定性和可重复使用性。加帽的CdO NPs具有出色的抗生物膜和抗菌活性金黄色葡萄球菌和铜绿假单胞菌的CdO–T20毒性最高。未封端的颗粒表现出最小的光稳定性，并且封端剂扩展了其抗光腐蚀的稳定性并提高了生物相容性。根据工业应用，本方法可用于制备各种纳米杂交颗粒。