Electrospun nanofibre materials to filter air pollutants - A review

This review presents an overview of electrospun nanomembranes produced from various polymers to filter air pollutants. Air pollutants can be categorised as particulate matter and gaseous pollutants. Both differ from each other in terms of size and chemical composition. Hence, the filter characterisation techniques and capture mechanism also vary. Particulate matter can be effectively captured in nanomembranes, in relation to microfibres, due to its small fibre diameter, small pore size and high specific surface area. Recently, electrospun nanomembranes have been used to filter gaseous pollutants owing to their potential of active surface modification. Different additives which functionalised the nanofibre surface for gaseous pollutant adsorption are also highlighted in this review. The characteristic features of nanofibres influencing the filtration efficiency have been discussed. Furthermore, various research challenges and future trends of electrospun nanomembranes in air filtration have been discussed.

这篇综述介绍了由各种聚合物生产的用于过滤空气污染物的电纺纳米膜的概况。空气污染物可分为颗粒物和气态污染物。两者在尺寸和化学组成方面彼此不同。因此，滤波器的表征技术和捕获机制也有所不同。相对于微纤维，由于其纤维直径小，孔径小和比表面积大，因此可以有效地将其捕获在纳米膜中。最近，由于电纺纳米膜具有活性表面改性的潜力，因此已用于过滤气态污染物。在这篇综述中，还着重介绍了使纳米纤维表面具有功能性以吸附气态污染物的各种添加剂。讨论了影响过滤效率的纳米纤维的特征。此外，已经讨论了空气过滤中电纺纳米膜的各种研究挑战和未来趋势。

Published: 2018

Journal ：Journal of Industrial Textiles

Impact Factor：2.455

Paper link: https://journals.sagepub.com/doi/abs/10.1177/1528083716676812