Removal of Acidic Organic Ionic Dyes from Water by Electrospinning a Polyacrylonitrile Composite MIL101(Fe)-NH 2 Nanofiber Membrane.
Jiao JiaHao WuLe XuFengchun DongYongtang JiaXi LiuPublished in: Molecules (Basel, Switzerland) (2022)
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)-NH 2 ), was prepared by one-step electrospinning. MIL101(Fe)-NH 2 was combined into the polymer nanofibers in situ. PAN-MIL101(Fe)-NH 2 composite nanofiber membranes (NFMs) were prepared from a homogeneous spinning stock containing MIL101(Fe)-NH 2 prebody fluid and PAN. Crystallization of MIL101(Fe)-NH 2 and solidification of the polymer occurred simultaneously during electrospinning. The PAN-MIL101(Fe)-NH 2 composite NFM showed that MIL101(Fe)-NH 2 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)-NH 2 crystals were effectively bonded in the PAN nanofiber matrix, and the crystallinity of MIL101(Fe)-NH 2 crystals remained good, while the distribution was uniform. Owing to the synergistic effect of PAN and the MIL101(Fe)-NH 2 crystal, the PAN-MIL101(Fe)-NH 2 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.
Keyphrases
- metal organic framework
- room temperature
- aqueous solution
- ionic liquid
- perovskite solar cells
- high resolution
- computed tomography
- magnetic resonance imaging
- drug delivery
- mass spectrometry
- solid phase extraction
- wastewater treatment
- cancer therapy
- gas chromatography mass spectrometry
- recombinant human
- iron deficiency