Directional Water Transfer Janus Nanofibrous Porous Membranes for Particulate Matter Filtration and Volatile Organic Compound Adsorption

In order to reduce the possible harm caused by air pollution, excellent personal protective materials are attracting more and more attention. Therefore, the research of multifunctional materials that can filter particulate matter (PM) and volatile organic compounds (VOCs) simultaneously is of great significance. In addition, in cold weather, water vapor in the exhaled gas condenses into small droplets inside the respirator causing uncomfortable feeling of dampness. Herein, we prepared several types of cyclodextrin-containing Janus nanofibrous porous membranes by electrospinning, which can efficiently filter PM of different sizes in the air, effectively adsorb VOCs, and orientate moisture from exhaled gas to the outside of the membranes to provide a dry and comfortable environment. These advantageous features, combined with the cheap price and easy availability of component materials and low respiratory resistance, highlight the great potential of these Janus nanofibrous porous membranes in the development of personal wearable air purifiers.

为了减少空气污染可能带来的危害，优质的个人防护材料正受到越来越多的关注。因此，能够同时过滤颗粒物（PM）和挥发性有机化合物（VOC）的多功能材料的研究具有重要的意义。比如在寒冷的天气中，呼出气体中的水蒸气会在呼吸器内凝结成小滴，从而产生令人不舒服的潮湿感。在这里，我们通过静电纺丝制备了几种类型的含环糊精的Janus纳米纤维多孔膜，它们可以有效过滤空气中不同大小的PM，有效吸附VOC，并使呼出气体中的水分定向到膜的外部，以提供干燥和干燥的效果。舒适的环境。这些有利的特征，再加上廉价的价格和容易获得的组件材料以及低呼吸阻力，突出了这些Janus纳米纤维多孔膜在个人可穿戴空气净化器开发中的利用价值。

Published: 2021

Journal ：ACS APPLIED MATERIALS & INTERFACES

Impact Factor：9.002

Paper link: https://pubs.acs.org/doi/abs/10.1021/acsami.0c18526