氧化纳米颗粒对临床相关细菌的抗菌活性取决于形态
Naila Zubair1, Rasha Mohammed Sajet Al-Oqaili2, Muhammad Junaid Yousaf3
1Department of Chemistry, Women University Mardan, Mardan, Pakistan.
Scientific reports
|November 23, 2025
概括
与商业ZnO相比,合成的氧化 (ZnO) 纳米颗粒,以纳米和微球形式,显示出增强的抗菌活性. 3D微球显示出对格拉姆阳性和格拉姆阴性细菌的卓越疗效.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 微生物学 微生物学
背景情况:
- 氧化 (ZnO) 纳米粒子具有较高的表面与体积比,对于有效的细菌相互作用至关重要.
- 纳米颗粒的抗菌性质受到尺寸和纳米结构的影响,更大的表面积增强了微生物接触和损伤.
研究的目的:
- 合成和描述具有不同的形态的ZnO纳米粒子 (圆形纳米棒和3D微球).
- 评估和比较合成的ZnO纳米颗粒对格兰阳性和格兰阴性细菌的抗菌活性.
主要方法:
- 通过无模板的水性沉方法合成ZnO纳米粒子 (Z1:纳米棒,Z2:微球).
- 描述涉及扫描电子显微镜 (SEM),X射线衍射 (XRD),里埃变换红外光谱 (FT-IR) 和热重力测量分析 (TGA).
- 使用阿加井扩散方法评估了抗菌活性.
主要成果:
- 合成的 ZnO 纳米颗粒显示出比商业 ZnO 的抗菌效果显著更高.
- Z1纳米棒和Z2微球显示了对所有测试细菌 (S. mutans,S. aureus,大肠杆菌,E. cloacae) 的剂量依赖抑制.
- Z2微球表现出更强的抗菌活性,抑制区在0.75μg/μL时高达35mm.
结论:
- ZnO纳米颗粒的形态显著影响其抗菌功效.
- 合成的ZnO纳米粒子,特别是3D微球,显示出抗菌应用的巨大潜力.
- 这些发现支持开发基于ZnO的新型抗微生物涂料和生物医学材料.
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