Hydro-Assisted Self-Regenerating Brominated N-Alkylated Thiophene Diketopyrrolopyrrole Dye Nanofibers-A Sustainable Synthesis Route for Renewable Air Filter Materials

With rising global concerns over the alarming levels of particulate pollution, a sustainable air quality management is the need of the hour. Air filtration research has gained momentum in recent years. However, the research perspective is still blinkered toward formulating new fiber systems for the energy-intensive electrospinning process to fabricate high quality factor air filters. A holistic approach on sustainable air filtration models is still lacking. The air filter model presented in this work uses a simple process involving water-induced self-organization and self-regeneration of nanofibers, and an easy recycling route after the filter life that not only facilitates reuse of the microfibrous scaffold holding the nanofibers but also allows renewal of nanofibers. Three generations of air filters are fabricated and tested, all having high particulate matter (PM)-adsorbing tendency, high filtration efficiency (>95%), and high Young's modulus (approximate to 5 GPa). The renewable air filters offer a sustainable alternative to the present cost-intensive electrospun air filters.

随着全球对令人担忧的颗粒物污染水平的担忧日益高涨，时刻需要可持续的空气质量管理。近年来，空气过滤的研究势头强劲。但是，研究观点仍在眨眼转向为耗能大的静电纺丝工艺配制新的纤维系统以制造高品质因子空气过滤器。仍然缺乏关于可持续空气过滤模型的整体方法。在这项工作中提出的空气过滤器模型使用了一个简单的过程，该过程涉及水诱导的纳米纤维的自组织和自我再生，以及在过滤器寿命后的简单回收途径，这不仅有利于保持纳米纤维的微纤维支架的再利用，而且还允许纳米纤维的更新。制造并测试了三代空气过滤器，它们均具有高颗粒物（PM）吸附趋势，高过滤效率（> 95％）和高杨氏模量（约5 GPa）。可再生空气过滤器提供了一种可持续的替代方法，可以替代目前成本高昂的静电纺丝空气过滤器。

Published: 2020

Journal ：Small

Impact Factor：11.321

Paper link: https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.201906319