Today, poor water and air quality caused by fine particulate matters (PMs), toxic spills, and antibiotic-containing wastewater are posing serious threats and risks to the environment and human health. Although many contaminant materials can be effectively removed by the traditional membrane technology, the simultaneous multifunctional materials like PM removal, oily water separation, and antibiotic adsorption are rarely reported. In addition, most of the membranes are destroyed when working in the harsh environment such as high temperatures, high pressures, strong acids and bases, and so on. In this work, a multifunctional Fe₃O₄@polyacrylonitrile/chitosan (Fe₃O₄@PAN/CS) membrane with robust stability and repeatable usage was fabricated via a simple and environment-friendly gas-spinning method; the obtained functional membrane is supposed to be applied in both air and liquid contaminant remediation. In comparison with the reported membranes, the multifunctional Fe₃O₄@PAN/CS composite nanofiber membranes not only have excellent performance in air filtration, antibiotic adsorption, or oil–water separation but also show robust reusability and durability even in harsh environments. Our strategy would bring ideas to the design and fabrication of multifunctional membranes for simultaneous environmental remediation such as air purification and wastewater treatment.

中文翻译：

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多功能气体纺丝分层体系结构：用于同时净化空气和水的坚固耐用的纳米纤维膜

如今，由细颗粒物（PMs），有毒物质溢出物和含抗生素的废水引起的水和空气质量差，对环境和人类健康构成了严重威胁和风险。尽管可以通过传统的膜技术有效地去除许多污染物，但很少报道同时去除PM，油水分离和抗生素吸附等多功能材料。另外，在高温，高压，强酸和强碱等恶劣环境下工作时，大多数膜会被破坏。在这项工作中，一种多功能的Fe ₃ O ₄ @聚丙烯腈/壳聚糖（Fe ₃ O ₄通过简单且环保的气体纺丝方法制造了具有坚固稳定性和可重复使用性的膜。假定所获得的功能膜可同时应用于空气和液体污染物的修复。与报道的膜相比，多功能Fe ₃ O ₄ @ PAN / CS复合纳米纤维膜不仅在空气过滤，抗生素吸附或油水分离方面具有出色的性能，而且即使在恶劣的环境下也显示出强大的可重复使用性和耐用性。我们的策略将为多功能膜的设计和制造带来想法，以同时进行环境修复，例如空气净化和废水处理。