Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 422, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2021.126835
Keywords
Nanofiber membrane; Air filtration; PM; Separation; Complex environment
Categories
Funding
- Youth Innovation Team Project of Shandong Provincial Education Department [2019KJC023]
- Postdoctoral Science Foundation of China [2018M642605]
- Natural Science Foundation of China [21802079]
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The study prepared a multi-purpose nanofiber composite membrane through simple electrospinning, which showed high temperature stability and excellent chemical resistance, suitable for air filtration and oil/water separation in complex and harsh environments.
Currently, industrial waste gas and oily wastewater are usually at high temperature and contain corrosive components (e.g., acid, alkali, oxidant, or high salt, etc.), presenting great challenges on filtration/separation materials. Here, a multi-purpose Poly(m-phenylene isophthalamide)/polyacrylonitrile/silica (PMIA/PAN/SiO2) nanofiber composite membrane with a high yield was prepared simply via electrospinning to satisfy the demands of air filtration and oil/water separation in complex environments. Under the synergy of PMIA, PAN and SiO2, the composite membrane possesses high PM0.3 removal capacity of 99.69%, robust purification ability against real smoke PM2.5, effective oil/water separation performance of > 99.6%, superior high temperature stability (about 250 degrees C) and excellent chemical resistance, showing the potential application in filtration/separation process under complex conditions. Moreover, the influence mechanism of SiO2 NPs on mechanical properties and filtration performance was systematically investigated through experiments and simulations, paving the way for future intensive research. This study provides an option for the facile and effective preparation of highperformance filtration/separation membranes applied in the field of dust filtration and oily wastewater separation, even in harsh environments.
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