Abstract Silver nanoparticles-attached zinc oxide (ZnO) nanorods on polyacrylonitrile/indium tin oxide (Ag-ZnO-PAN/ITO) nanofibres with three-dimensional (3D) hierarchical nanostructures were facilely prepared via electrospinning followed by hydrothermal synthesis of ZnO nanorods and silver attachment with the assistance of polydopamine (PDA) thin layer. ZnO nanorods with different dimensions and silver nanoparticles with different loadings were introduced. The morphologies and structures of the nanostructures were studied by scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD) and thermogravimetric analyzer (TGA). The effect of Ag-ZnO-PAN/ITO nanofibres with different loadings of ZnO nanorods and silver nanoparticles on their antibacterial activity against Escherichia coli and Pseudomonas aeruginosa was investigated. It is shown that the hybrid nanofibres exhibit excellent antibacterial capability. The hierarchical structure benefits the attachment of a large amount of silver nanoparticles due to its large surface area, and the deposited PDA thin layer helps improve the structure stability for long-term antibacterial application through firmly anchoring silver nanoparticles onto the surface. This work offers an effective and straightforward “all-solution” strategy to incorporate Ag-ZnO combination into nanofibrous PAN. Moreover, the hierarchical nanostructure integrates the antibacterial function of both ZnO and silver, and renders itself a promising candidate as for sportswear and equipment.

中文翻译：

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Ag-ZnO-PAN/ITO 杂化纳米纤维的松散纱：制备、表征和抗菌评价

摘要 通过静电纺丝和水热合成 ZnO 纳米棒和银，在聚丙烯腈/氧化铟锡 (Ag-ZnO-PAN/ITO) 纳米纤维上通过静电纺丝轻松制备了银纳米颗粒连接的氧化锌 (ZnO) 纳米棒。在聚多巴胺 (PDA) 薄层的帮助下进行附着。介绍了不同尺寸的ZnO纳米棒和不同负载量的银纳米颗粒。通过扫描电子显微镜 (SEM)、透射电子显微镜 (TEM)、X 射线衍射 (XRD) 和热重分析仪 (TGA) 研究了纳米结构的形貌和结构。研究了具有不同负载量的 ZnO 纳米棒和银纳米粒子的 Ag-ZnO-PAN/ITO 纳米纤维对其对大肠杆菌和铜绿假单胞菌的抗菌活性的影响。结果表明，混合纳米纤维表现出优异的抗菌能力。由于其较大的表面积，分级结构有利于大量银纳米颗粒的附着，沉积的 PDA 薄层通过将银纳米颗粒牢固地固定在表面上，有助于提高长期抗菌应用的结构稳定性。这项工作提供了一种有效且直接的“全解决方案”策略，可将 Ag-ZnO 组合结合到纳米纤维 PAN 中。此外，分级纳米结构整合了 ZnO 和银的抗菌功能，