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Preparation of PAN/SiO2/CTAB electrospun nanofibrous membranes for highly efficient air filtration and sterilization by Junyan Cui; Menghui Wan; Zhihua Wang; Yanbao Zhao; Lei Sun is a Engineering article available to read on EtoBox.

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Air particulate pollution from increasing industrialization poses an enormous threat to public health. It is therefore of particular importance to develop air filters with excellent filtration properties and antimicrobial properties. Here we design a novel air filter for outdoor personal protection. The air filter's composite nanofibrous materials are prepared by electrospinning method using polyacrylonitrile (PAN) as the base polymer, silica dioxide (SiO 2 ) as the electret r and cetyltrimethylammonium bromide (CTAB) as the antimicrobial agent. Fourier-infrared spectroscopy, surface potential, and X-ray photoelectron spectroscopy characterization reveal the successful incorporation of SiO 2 and CTAB into PAN. The air filtration test shows that the composite nanofibrous membrane has outstanding PM 0.3 filtration efficiency (98.5%) and lower pressure drop (76 Pa) at 32 L/min flow rate. Moreover, the durability tests show that the composite nanofibrous membranes have a long lifetime in terms of filtration performance. The filtration efficiency is reduced by only 2% after 48 h. In addition, the antimicrobial properties were tested by implementing both E. coli and S. aureus with up to

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Author

Junyan Cui; Menghui Wan; Zhihua Wang; Yanbao Zhao; Lei Sun

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)