期刊
ACS APPLIED NANO MATERIALS
卷 1, 期 8, 页码 4268-4277出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.8b01056
关键词
electrospinning; composite nanofibers; air filtration; formaldehyde adsorption; cytotoxicity; multifunctional respiratory filtration
资金
- Royal Melbourne Institute of Technology (RMIT) International PhD Scholarship
Simultaneous capture of different air pollutants including aerosols and volatile organic compound (VOC) is demonstrated using composite polyacrylonitrile (PAN)/beta-cyclodextrin (beta-CD) nanofiber membrane. Aerosol filtration along with VOCs adsorption in one step remains a challenge due to differences in the physical and chemical properties of these air pollutants. PAN/beta-CD composite electrospun nanofiber membranes (ENMs) were produced with different concentrations of beta-CD. The surface modification of the composite ENM was confirmed by X-ray photoelectron spectroscopy (XPS), field emission-scanning electron microscopy (FE-SEM) and water contact angles. PAN/beta-CD composite ENMs showed excellent air filtration performance (>95% filtration efficiency with a relatively low pressure drop of 112 Pa). Formaldehyde (HCHO) adsorption was determined using a simple jar method and xylene adsorption by UV spectroscopy. HCHO and xylene adsorption found better by 66% and 73%, respectively, compared to pristine PAN ENM despite a reduction in fiber surface area. The composite ENMs were found to be nontoxic to human lung cell line, suggesting that it is a good candidate for respiratory filter media for simultaneous air filtration and VOC adsorption.
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