用于红外隐身、自清洁和抗菌应用的多功能 PAN/Al-ZnO/Ag 纳米纤维,ACS Applied Nano Materials

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用于红外隐身、自清洁和抗菌应用的多功能 PAN/Al-ZnO/Ag 纳米纤维
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2021-12-21 , DOI: 10.1021/acsanm.1c03518
Hao Wang ₁ , Yuying Ma ₁ , Ju Qiu _{1,

2} , Jing Wang ₁ , Hao Zhang ₃ , Yongxin Li ₃ , Ce Wang ₁

Affiliation

随着现代红外探测系统的发展，军事目标更容易暴露，导致高价值目标被探测到的风险越来越大。因此，非常需要隐形材料来保护这些目标。此外，隐身材料应扩大其应用场景，以满足军事装备日益增长的性能要求。在这项工作中，通过静电纺丝、溶剂热和化学镀工艺制备了具有红外防护、抗菌和自清洁三种功能的聚丙烯腈（PAN）/Al-ZnO/Ag 纳米纤维复合材料（PAN/ZAO/Ag）。ZAO纳米片与Ag纳米粒子直接接触形成肖特基结，使材料具有等离子共振吸收近红外光的特性。在8~14 μm的热红外成像波段，光纤的红外发射率低至0.39，有效阻挡了目标的热辐射。复合膜还实现了自洁效果和协同抗菌效果，对水的最大接触角为131.5°，抗菌率为100%。综上所述，本研究为多功能红外防护服材料应对复杂战场环境提供了可能。

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Multifunctional PAN/Al–ZnO/Ag Nanofibers for Infrared Stealth, Self-Cleaning, and Antibacterial Applications

With the development of modern infrared detection systems, military targets are more easily exposed, leading to the increasing risk of high-value targets being detected. Thus, stealth materials are highly desired to protect these targets. Additionally, stealth materials should expand their application scenarios to meet the growing performance requirements of military equipment. In this work, a polyacrylonitrile (PAN)/Al–ZnO/Ag nanofiber composite (PAN/ZAO/Ag) with three functions including infrared protection, antibacterial property, and self-cleaning was prepared by electrospinning, solvothermal, and electroless plating processes. The Schottky junction was formed due to the direct contact between ZAO nanosheets and Ag nanoparticles, leading the materials to possess the characteristic of plasmon resonance absorption of near-infrared light. In the thermal infrared imaging band of 8–14 μm, the infrared emissivity of the fiber was as low as 0.39, effectively blocking the target’s thermal radiation. The composite membranes also achieved self-cleaning effect and synergistic antibacterial effect, with the maximum contact angle of 131.5° for water and 100% of antibacterial rate. In summary, this study provided a possibility for multifunctional infrared protective clothing materials to deal with the complex battlefield environment.

更新日期：2022-01-28

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