In order to reduce the possible harm caused by air pollution, including particulate matters (PM), harmful gases and airborne pathogens, high-efficiency air filtration materials are attracting more and more attention. Therefore, multifunctional materials that can filter these pollutants and kill pathogenic bacteria simultaneously are urgently desired. Herein, a copper-coordinated nanofibrous membrane, named PAN-P-Cu, was successfully prepared based on polyacrylonitrile (PAN) nanofibers grafted polyethyleneimine (PEI) by electrospinning and coordination assembly method. The PAN-P-Cu showed high filtration efficiency (99.9%) towards PM under an airflow velocity of 5.3 cm s and high filtration efficiency (99.94%) towards PM, respectively. Importantly, used membrane could be regenerated by a simple washing process. Moreover, PAN-P-Cu possessed removal property of 60 mg g for hydrogen sulfide through the occurrence of chemical reactions. Furthermore, the PAN-P-Cu also exhibited excellent antibacterial activities against and (>99.99%). This work may provide new insights on designing high-performance and multi-functional air filtration materials for public health protection in complicated environments.

中文翻译：

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具有抗菌性能的多功能纳米纤维膜，可高效捕获PM0.3和硫化氢

为了减少空气污染，包括颗粒物（PM）、有害气体和空气中的病原体等可能造成的危害，高效空气过滤材料越来越受到人们的关注。因此，迫切需要能够过滤这些污染物并同时杀死病原菌的多功能材料。本文以聚丙烯腈（PAN）纳米纤维接枝聚乙烯亚胺（PEI）为基础，采用静电纺丝和配位组装方法成功制备了铜配位纳米纤维膜，命名为PAN-P-Cu。 PAN-P-Cu 在气流速度为 5.3 cm s 时对 PM 表现出高过滤效率（99.9%），对 PM 表现出高过滤效率（99.94%）。重要的是，用过的膜可以通过简单的清洗过程再生。此外，PAN-P-Cu通过发生化学反应具有60 mg g-1的硫化氢去除性能。此外，PAN-P-Cu还表现出优异的抗菌活性（>99.99%）。这项工作可能为设计高性能、多功能空气过滤材料以保护复杂环境下的公共卫生提供新的见解。