Electrospun Nanocomposite Fibrous Membranes for Sustainable Face Mask Based on Triboelectric Nanogenerator with High Air Filtration Efficiency,Advanced Fiber Materials

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Electrospun Nanocomposite Fibrous Membranes for Sustainable Face Mask Based on Triboelectric Nanogenerator with High Air Filtration Efficiency
Advanced Fiber Materials ( IF 17.2 ) Pub Date : 2023-05-15 , DOI: 10.1007/s42765-023-00299-z
Yue Yang ₁ , Yuchen Yang _{1,

2} , Jianying Huang _{1,

2} , Shuhui Li _{3,

4} , Zheyi Meng ₅ , Weilong Cai _{1,

2} , Yuekun Lai _{1,

2}

Affiliation

Abstract

Air pollution caused by the rapid development of industry has always been a great issue to the environment and human being’s health. However, the efficient and persistent filtration to PM_0.3 remains a great challenge. Herein, a self-powered filter with micro–nano composite structure composed of polybutanediol succinate (PBS) nanofiber membrane and polyacrylonitrile (PAN) nanofiber/polystyrene (PS) microfiber hybrid mats was prepared by electrospinning. The balance between pressure drop and filtration efficiency was achieved through the combination of PAN and PS. In addition, an arched TENG structure was created using the PAN nanofiber/PS microfiber composite mat and PBS fiber membrane. Driven by respiration, the two fiber membranes with large difference in electronegativity achieved contact friction charging cycles. The open-circuit voltage of the triboelectric nanogenerator (TENG) can reach to about 8 V, and thus the high filtration efficiency for particles was achieved by the electrostatic capturing. After contact charging, the filtration efficiency of the fiber membrane for PM_0.3 can reach more than 98% in harsh environments with a PM_2.5 mass concentration of 23,000 µg/m³, and the pressure drop is about 50 Pa, which doesn’t affect people’s normal breathing. Meanwhile, the TENG can realize self-powered supply by continuously contacting and separating the fiber membrane driven by respiration, which can ensure the long-term stability of filtration efficiency. The filter mask can maintain a high filtration efficiency (99.4%) of PM_0.3 for 48 consecutive hours in daily environments.

Graphical abstract

中文翻译：

基于高空气过滤效率摩擦纳米发电机的静电纺丝纳米复合纤维膜，用于可持续口罩

摘要

工业快速发展造成的空气污染一直是环境和人类健康面临的重大问题。然而，高效、持久地过滤PM _0.3仍然是一个巨大的挑战。在此，通过静电纺丝制备了由聚丁二醇琥珀酸酯（PBS）纳米纤维膜和聚丙烯腈（PAN）纳米纤维/聚苯乙烯（PS）微纤维混合垫组成的微纳复合结构的自供电过滤器。通过PAN和PS的组合实现了压降和过滤效率之间的平衡。此外，还使用PAN纳米纤维/PS超细纤维复合垫和PBS纤维膜创建了拱形TENG结构。在呼吸作用的驱动下，两种电负性差异较大的纤维膜实现了接触摩擦充电循环。摩擦纳米发电机（TENG）的开路电压可达8 V左右，因此通过静电捕获实现了对颗粒物的高过滤效率。接触充电后，纤维膜在PM _2.5质量浓度23000 µg/m ^{3的恶劣环境下，对PM}_0.3的过滤效率可达98%以上，压降约50 Pa，不影响人的正常呼吸。同时，TENG可以通过呼吸驱动纤维膜不断接触和分离，实现自供电，可以保证过滤效率的长期稳定。该过滤口罩可在日常环境下连续48小时保持对PM _0.3的高过滤效率（99.4%）。

图形概要

更新日期：2023-05-15

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