Air-Conditioned Masks Using Nanofibrous Networks for Daytime Radiative Cooling
Air-Conditioned Masks Using Nanofibrous Networks for Daytime Radiative Cooling
复制标题
DOI：
10.1021/acs.nanolett.2c03585
复制
发表时间：
2022-12-05
期刊：
影响因子：
10.8
通讯作者：
Ding, Bin
中科院分区：
文献类型：
--
作者：
Liu, Hui;Yu, Jianyong;Ding, Bin
口罩作为被动控制空气污染的有效措施，具有根本性的重要性，特别是在新出现的传染病爆发的情况下。现有的大多数口罩都很密或很厚，导致缺乏热/湿度舒适度；尽管戴得很紧，但它们对PM0.3/病原体的去除有限。在这里，我们使用一种简单的策略来制造空调口罩，使用基于静电纺丝/网技术的异质纳米纤维网络。通过控制湿度诱导的双扩散和泰勒锥不稳定性来控制带电射流/液滴的相分离和自组装，可以产生由辐射冷却、皱折的纳米纤维和二维纳米结构网络组成的空调面具。我们的口罩显示了理想的微环境，具有高效的PM0.3脱除率(>；99.988%)、低空气阻力(大气压的0.07%)和卓越的辐射冷却能力(类似于2.8摄氏度的温度和类似于10%的湿度下降)，使高性能过滤和温度/湿度管理“始终在线”。这项工作将使开发各种应用的高性能、节能和可伸缩的纤维纺织品成为可能。
Face masks, as effective measures for passive air pollution control, are of fundamental importance, especially with the outbreak of emerging infectious diseases. Most existing masks are dense or thick, resulting in a lack of thermal/humidity comfort level; despite being worn tightly, they show limited PM0.3/pathogen removal. Here, we use a facile strategy to create air-conditioned masks using heterogeneous nanofibrous networks, based on an electrospinning/netting technique. Manipulation of the phase separation and self-assembly of charged jet/droplets by control of humidity-induced double diffusion and Taylor cone instability allows for the generation of air-conditioned masks consisting of radiative cooling wrinkled nanofibers and 2D nanostructured networks. Our masks show desirable microenvironment with high-efficiency PM0.3 removal (>99.988%), low air resistance (0.07% of atmospheric pressure), and remarkable radiative cooling capacity (similar to 2.8 degrees C temperature and similar to 10% humidity drop), making high-performance filtration and temperature/humidity management "always online". This work should make possible the development of high-performance, energy-saving, and scalable fiber textiles for various applications.