同表面活性剂对Cu2O和混合Cu2O/Ag颗粒的特性和杀菌活性的影响
Dam Xuan Thang1, Nguyen Thuy Chinh2,3, Nguyen Thi Binh Minh4
1Department of Chemical Technology, Hanoi University of Industry, 298, Cau Dien, Minh Khai, Bac Tu Liem, Hanoi, 100000, Vietnam.
ChemistryOpen
|March 1, 2024
概括
这项研究用银 (Ag) 和表面活性剂增强了氧化铜 (Cu2O) 纳米颗粒,显著增强了对大肠杆菌和金黄色杆菌的抗菌特性. 经过修改的Cu2O/Ag/PEG纳米粒子也提高了烯酸油漆薄膜的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 化学 化学 化学
背景情况:
- 金属氧化物纳米材料,特别是Cu2O,表现出独特的表面等离子体共振特性.
- Cu2O固有的抗菌能力可以通过表面修饰进一步提高.
- 开发具有改进抗微生物和材料性能的新型纳米材料对于各种应用至关重要.
研究的目的:
- 通过共同沉方法合成Cu2O和Cu2O-Ag纳米粒子.
- 调查聚乙烯甘醇6000 (PEG 6000) 和二硫酸盐 (SDS) 表面活性剂对纳米粒子特性和抗菌活性的影响.
- 为了评估合成纳米颗粒在纳入烯酸乳液油漆薄膜时的性能.
主要方法:
- 联合沉方法用于Cu2O合成,具有Ag纳米粒子附着.
- 使用亚酸 (LAA) 作为减少剂的氧化还原反应.
- 使用UV-Vis,IR,XRD,SEM,DLS,EDS和TEM进行表征.
- 通过阿加井扩散方法评估抗菌活性.
- 评估纳米粒子增强的烯酸油漆薄膜的性能 (粘附性,硬度,耐沙).
主要成果:
- 添加表面活性剂 (PEG和SDS) 使颗粒大小减半至大约200nm.
- 观察到抗菌活性显著增强;抑制区从约14毫米增加到32毫米 (大肠杆菌,Cu2O/Ag/PEG) 和36毫米 (黄金色,Cu2O/Ag/PEG).
- 在烯酸油漆薄膜中加入的Cu2O/Ag/PEG显示了较好的附着性 (1.22 MPa),相对硬度 (240/425) 和抗沙落 resistance (100 L/mil).
结论:
- 联合沉方法与表面活性剂修改相结合,可有效地生产增强的基于Cu2O的纳米材料.
- 添加Ag纳米颗粒和表面活性剂 (PEG,SDS) 显著提高了Cu2O的抗菌功效.
- Cu2O/Ag/PEG纳米颗粒显示了提高烯酸漆膜功能的潜力.
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