Preparation of multifunctional AgNPs/PAN nanofiber membrane for air filtration by one-step process

Purpose

The purpose of this paper is to fabricate a high-performance filtration electrospun nanofiber membrane with antibacterial function. The Ag nanoparticles (AgNPs) gotten by reducing AgNO3 act as antimicrobial agent. Then the AgNPs/Polyacrylonitrile (AgNPs/PAN) composite nanofiber membrane was prepared by electrospinning.

Design/methodology/approach

The electrospun Ag/PAN composite membrane was prepared by one step, in which the Ag particles were acting as antibacterial agent and PAN nanofiber as the upholder of the composite mat. AgNPs were obtained by reducing AgNO3 in N,N-Dimethylformamide (DMF) solution at high temperature. Meanwhile, the PAN particles were added to DMF solution and dissolved. Then the Ag/PAN nanofiber was obtained by electrospinning.

Findings

The thinner nanofiber can be produced with PAN concentration of 12 per cent and AgNPs concentration of 10 per cent. Finally, the filtration resistance of the composite membrane with antibacterial property is as high as 99.1 per cent, and the filtration efficiency is only 83 Pa. Therefore, the AgNPs/PAN composite membrane is the ideal choice for air filtration with antibacterial property.

Originality/value

The AgNPs/PAN composite nanofiber membrane has high filtration performance for particulate matter (PM)25 and outstanding antibacterial property to Escherichia coli and Staphylococcus aureus, which can be used with masks, air-conditioning filters (including car air-conditioning filters), window screening and other similar objects.

目的

本文的目的是制造一种具有抗菌功能的高性能过滤电纺纳米纤维膜。通过还原AgNO3得到的Ag纳米颗粒（AgNPs）起着抗菌剂的作用。然后通过电纺丝法制备了AgNPs /聚丙烯腈（AgNPs / PAN）复合纳米纤维膜。

设计/方法/方法

通过一步制备电纺丝Ag / PAN复合膜，其中Ag颗粒充当抗菌剂，PAN纳米纤维充当复合垫的支持者。通过在高温下还原N，N-二甲基甲酰胺（DMF）溶液中的AgNO3可获得AgNPs。同时，将PAN颗粒添加到DMF溶液中并溶解。然后通过电纺丝获得Ag / PAN纳米纤维。

发现

可以生产出较细的纳米纤维，其中PAN浓度为12％，AgNPs浓度为10％。最后，具有抗菌性能的复合膜的过滤阻力高达99.1％，过滤效率仅为83 Pa。因此，AgNPs / PAN复合膜是具有抗菌性能的空气过滤的理想选择。

创意/价值

AgNPs / PAN复合纳米纤维膜对颗粒物（PM）25具有很高的过滤性能，并且对大肠杆菌和金黄色葡萄球菌具有出色的抗菌性能，可与口罩，空调过滤器（包括汽车空调过滤器），窗户一起使用筛选和其他类似的对象。

Published: 2020

Journal ：Pigment & Resin Technology

Impact Factor：1.008

Paper link: https://www.emerald.com/insight/content/doi/10.1108/PRT-08-2019-0075/full/html