Removal of Acidic Organic Ionic Dyes from Water by Electrospinning a Polyacrylonitrile Composite MIL101(Fe)-NH2 Nanofiber Membrane

A nanofiber metal–organic framework filter, a polyacrylonitrile (PAN) nanofiber membrane composite with an iron/2-amino-terephthalic acid-based metal–organic framework (MIL101(Fe)-NH2), was prepared by one-step electrospinning. MIL101(Fe)-NH2 was combined into the polymer nanofibers in situ. PAN-MIL...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2022-03, Vol.27 (6), p.2035
Main Authors: Jia, Jiao, Wu, Hao, Xu, Le, Dong, Fengchun, Jia, Yongtang, Liu, Xi
Format: Article
Language:English
Subjects:
Acids
Adsorbents
Adsorption
Aqueous solutions
Color removal
Crystallization
Crystals
Dyes
Electrospinning
Fourier analysis
Fourier transforms
functional nanofibers
Infrared analysis
Infrared spectroscopy
Membranes
Metal-organic frameworks
MIL101(Fe)-NH2
Nanofibers
Outdoor air quality
Polyacrylonitrile
Polymers
Solidification
Spectrum analysis
Synergistic effect
Terephthalic acid
Wastewater
Water treatment
water treatment membrane
X-ray diffraction
X-ray spectroscopy
Zeolites
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Summary:A nanofiber metal–organic framework filter, a polyacrylonitrile (PAN) nanofiber membrane composite with an iron/2-amino-terephthalic acid-based metal–organic framework (MIL101(Fe)-NH2), was prepared by one-step electrospinning. MIL101(Fe)-NH2 was combined into the polymer nanofibers in situ. PAN-MIL101(Fe)-NH2 composite nanofiber membranes (NFMs) were prepared from a homogeneous spinning stock containing MIL101(Fe)-NH2 prebody fluid and PAN. Crystallization of MIL101(Fe)-NH2 and solidification of the polymer occurred simultaneously during electrospinning. The PAN-MIL101(Fe)-NH2 composite NFM showed that MIL101(Fe)-NH2 was uniformly distributed throughout the nanofiber and was used to adsorb and separate acidic organic ionic dyes from the aqueous solution. The results of Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction analysis showed that MIL101(Fe)-NH2 crystals were effectively bonded in the PAN nanofiber matrix, and the crystallinity of MIL101(Fe)-NH2 crystals remained good, while the distribution was uniform. Owing to the synergistic effect of PAN and the MIL101(Fe)-NH2 crystal, the PAN-MIL101(Fe)-NH2 composite NFM showed a fast adsorption rate for acidic ionic dyes. This study provides a reference for the rapid separation and purification of organic ionic dyes from wastewater.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules27062035