The development of new materials for air filtration and particulate matter (PM) pollution is critical to solving global environmental issues that threaten human health and accelerate the greenhouse effect. In this study, a novel electrospun polystyrene-SiO₂ nanoparticle (PS-SNP) fibrous membrane was explored by a single-step strategy to obtain the composite multi-layered filter masks. In addition, the air filtration performance of this fibrous membrane for PM was evaluated. The effects of SiO₂ on the composition, morphology, mechanical property, and surface wetting of PS-SNP membranes were studied. Allowing SiO₂ to be incorporated into the PS polymer was endowed with promising superhydrophobicity and demonstrated excellent mechanical properties. As-prepared PS-SNP membranes possess significantly better filtration efficiency than pure PS membrane. Furthermore, a three-layered air filter media (viscose/PS-SNP/polyethylene terephthalate) used in this study has considerable performances compared to the commercial masks. Since this air filtration membrane has excellent features such as high air filtration and permeability, we anticipate it to have huge potential application in air filtration systems, including cleanroom, respirator, and protective clothing.

开发用于空气过滤和颗粒物 (PM) 污染的新材料对于解决威胁人类健康和加速温室效应的全球环境问题至关重要。在这项研究中，通过一步策略探索了一种新型电纺聚苯乙烯-SiO ₂纳米颗粒（PS-SNP）纤维膜，以获得复合多层过滤口罩。另外，评价了该PM用纤维膜的空气过滤性能。研究了SiO ₂对PS-SNP膜的组成、形貌、力学性能和表面润湿性的影响。允许 SiO ₂被加入到 PS 聚合物中被赋予了有前途的超疏水性并表现出优异的机械性能。所制备的 PS-SNP 膜比纯 PS 膜具有明显更好的过滤效率。此外，与商用口罩相比，本研究中使用的三层空气过滤介质（粘胶/PS-SNP/聚对苯二甲酸乙二醇酯）具有相当大的性能。由于这种空气过滤膜具有高空气过滤性和渗透性等优异特性，我们预计它在空气过滤系统中具有巨大的应用潜力，包括洁净室、呼吸器和防护服。