In the case of Cu nanofibers, we observed that Zn (OH)(2) antibacterial activity played a leading role.

Particulate matter is one of the main pollutants, causing hazy days, and it has been serious concern for public health worldwide, particularly in China recently. Quality of outdoor atmosphere with a pollutant emission of PM2.5 is hard to be controlled; but the quality of indoor air could be achieved by using fibrous membrane-based air-filtering devices. Herein, we introduce nanofiber membranes for both indoor and outdoor air protection by electrospun synthesized polyacrylonitrile:TiO2 and developed polyacrylonitrile-co-polyacrylate:TiO2 composite nanofiber membranes. In this study, we design both polyacrylonitrile:TiO2 and polyacrylonitrile-co-polyacrylate:TiO2 nanofiber membranes with controlling the nanofiber diameter and membrane thickness and enable strong particulate matter adhesion to increase the absorptive performance and by synthesizing the specific microstructure of different layers of nanofiber membranes. Our study shows that the developed polyacrylonitrile-co-polyacrylate:TiO2 nanofiber membrane achieves highly effective (99.95% removal of PM2.5) under extreme hazy air-quality conditions (PM2.5 mass concentration 1 mg/m(3)). Moreover, the experimental simulation of the test in 1 cm(3) air storehouse shows that the polyacrylonitrile-co-polyacrylate:TiO2 nanofiber membrane (1 g/m(2)) has the excellent PM 2.5 removal efficiency of 99.99% in 30 min.

颗粒物是造成雾霾的主要污染物之一，并且已引起全球公众健康的严重关注，尤其是最近在中国。污染物排放为PM2.5的室外大气质量难以控制。但是使用基于纤维膜的空气过滤装置可以达到室内空气的质量。在这里，我们介绍了通过电纺合成聚丙烯腈：TiO2和开发的聚丙烯腈-共聚丙烯酸酯：TiO2复合纳米纤维膜用于室内和室外空气保护的纳米纤维膜。在这项研究中，我们设计了聚丙烯腈：TiO2和聚丙烯腈-共聚丙烯酸酯：TiO2纳米纤维膜，它们可以控制纳米纤维的直径和膜厚度，并能通过牢固的颗粒物质粘附力来提高吸收性能并通过合成不同纳米纤维层的特定微观结构来实现膜。我们的研究表明，在极端浑浊的空气质量条件（PM2.5质量浓度为1 mg / m（3））下，开发的聚丙烯腈-共聚丙烯酸酯：TiO2纳米纤维膜可实现高效（去除PM9的99.95％）。此外，在1 cm（3）空气库中进行的测试实验模拟表明，聚丙烯腈-共聚丙烯酸酯：TiO2纳米纤维膜（1 g / m（2））在30分钟内具有99.99％的出色的PM 2.5去除效率。 

Published: 2020

Journal ：NANOSCALE RESEARCH LETTERS

Impact Factor：3746

Paper link: https://nanoscalereslett.springeropen.com/articles/10.1186/s11671-019-3225-2