期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 138, 期 20, 页码 -出版社
WILEY
DOI: 10.1002/app.50431
关键词
benzene adsorption; carbon nanofibers; electrospinning; PAN; ZIF‐ 8
资金
- Innovation Project of Guangxi Graduate Education [XYCSZ2020049]
- Funding of Guangxi Key Laboratory of Low Carbon Energy Materials [RZ1900005893]
- Natural Science Foundation of Guangxi Province [RZ2000002709]
- Special Funding for Overseas Talents [RZ2000001585]
Metal-organic-frameworks derived porous carbon fibers synthesized by electrospinning exhibit great potential in VOC adsorption. N-doped carbon nanofibers fabricated in N-2 atmosphere show enhanced benzene adsorption capacity due to synergistic effect of hierarchically porous structure and abundant N-species-containing active sites, while N-doped hierarchical carbon nanofibers fabricated in Ar atmosphere exhibit lower benzene adsorption attributed to porous structure damage caused by heavy Ar atoms during pyrolysis. These findings suggest promising application of N-CF-N-2 in VOCs adsorption for air purification and expand potential of electrospinning technology and composite fibers in volatile organic gas adsorption.
Coupling with electrospinning technique, metal-organic-frameworks (MOFs)-derived porous carbon fibers exhibit a great potential application in the adsorption of volatile organic compounds (VOCs) because of their huge surface area, high porosity, as well as sufficient heteroatom-doped active sites. In this work, the hierarchically porous N-doped carbon nanofibers are obtained after the pyrolysis of zeolite imidazole framework-8 and polyacrylonitrile (ZIF-8/PAN) composite fibers synthesized by electrospinning method. The N-doped carbon nanofibers fabricated in N-2 atmosphere (N-CF-N-2) present an enhanced adsorption capacity of 694 mg/g for benzene because of the synergistic effect of the hierarchically porous structure and the abundant N-species-containing active sites. It is also interesting that the N-doped hierarchical carbon nanofibers fabricated in Ar atmosphere (N-CF-Ar) exhibit a low benzene adsorption as compared with the N-CF-N-2, which can be attributed to the porous structure damage caused by the bombardment of heavy Ar atoms on the pore shells during the pyrolysis. These results not only show a promising application of the as-fabricated N-CF-N-2 in adsorption of VOCs for air purification due to its merit of cost-efficient, large-scale production, and excellent adsorption capacity, but also expand the potential of electrospinning technology and composite fibers in volatile organic gas adsorption.
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