SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 61 ›› Issue (9): 210-220.DOI: 10.1016/j.cjche.2023.03.010

• Full Length Article • 上一篇    下一篇

Magnetic polyacrylonitrile/ZIF-8/Fe3O4 nanocomposite bead as an efficient iodine adsorbent and antibacterial agent

Reza Sacourbaravi1, Zeinab Ansari-Asl1, Esmaeil Darabpour2   

  1. 1. Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran;
    2. Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
  • 收稿日期:2022-10-26 修回日期:2023-03-18 出版日期:2023-09-28 发布日期:2023-12-14
  • 通讯作者: Zeinab Ansari-Asl,E-mail:z.ansari@scu.ac.ir
  • 基金资助:
    The authors gratefully acknowledge financial support (SCU.SC1400.29011) from the Shahid Chamran University of Ahvaz.

Magnetic polyacrylonitrile/ZIF-8/Fe3O4 nanocomposite bead as an efficient iodine adsorbent and antibacterial agent

Reza Sacourbaravi1, Zeinab Ansari-Asl1, Esmaeil Darabpour2   

  1. 1. Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran;
    2. Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
  • Received:2022-10-26 Revised:2023-03-18 Online:2023-09-28 Published:2023-12-14
  • Contact: Zeinab Ansari-Asl,E-mail:z.ansari@scu.ac.ir
  • Supported by:
    The authors gratefully acknowledge financial support (SCU.SC1400.29011) from the Shahid Chamran University of Ahvaz.

摘要: The efficient adsorption of radioactive iodine (129I and 131I) as nuclear waste is of great importance. Polymer nanocomposites consist of metal–organic frameworks (MOFs) developing for various pollutions sorption and separation have attracted much attention. This study reports the fabrication of magnetic polyacrylonitrile (PAN)/zeolitic imidazolate frameworks (ZIF-8) nanocomposites, PAN/ZIF-8(x%)/Fe3O4, x = 30 and 50, as iodine capture adsorbents. The PAN/ZIF-8(x%)/Fe3O4 nanocomposite beads were fabricated via the phase inversion method, and their potential for iodine capture and separation in solution and vapor was investigated through UV–vis and weighing methods, respectively. Also, antibacterial activity of the as-prepared beads was assessed against E. coil and S. aureus. The as-fabricated compounds were studied by various techniques such as Fourier-transform infrared, X-ray diffraction, scanning electron microscope, energy-dispersive X-ray spectroscopy mapping, transmission electron microscope, N2 adsorption isotherm, and vibrating sample magnetometer. The iodine capture results showed that the efficiency of nanocomposites is remarkably higher than the pure PAN beads. Additionally, the as-prepared nanocomposite adsorbents displayed higher capture capacities for iodine vapor (1524–4345 mg·g-1) than iodine solution (187–295 mg·g-1). The as-obtained magnetic nanocomposites can be successfully separated from polluted media by simple filtration or an external magnet, regenerated through washing with ethanol, and reused. Fast capturing, high sorption capacity, rapid separation, and good reusability make the PAN/ZIF-8(x%)/Fe3O4 nanocomposites highly effective adsorbents for the separation of iodine from wastewater. Additionally, PAN/ZIF-8(50%)/Fe3O4 bead can be considered as a potential new antibacterial agent for water and wastewater treatment.

关键词: ZIF-8, Polyacrylonitrile, Composites, Adsorption, Waste treatment, Antibacterial agent

Abstract: The efficient adsorption of radioactive iodine (129I and 131I) as nuclear waste is of great importance. Polymer nanocomposites consist of metal–organic frameworks (MOFs) developing for various pollutions sorption and separation have attracted much attention. This study reports the fabrication of magnetic polyacrylonitrile (PAN)/zeolitic imidazolate frameworks (ZIF-8) nanocomposites, PAN/ZIF-8(x%)/Fe3O4, x = 30 and 50, as iodine capture adsorbents. The PAN/ZIF-8(x%)/Fe3O4 nanocomposite beads were fabricated via the phase inversion method, and their potential for iodine capture and separation in solution and vapor was investigated through UV–vis and weighing methods, respectively. Also, antibacterial activity of the as-prepared beads was assessed against E. coil and S. aureus. The as-fabricated compounds were studied by various techniques such as Fourier-transform infrared, X-ray diffraction, scanning electron microscope, energy-dispersive X-ray spectroscopy mapping, transmission electron microscope, N2 adsorption isotherm, and vibrating sample magnetometer. The iodine capture results showed that the efficiency of nanocomposites is remarkably higher than the pure PAN beads. Additionally, the as-prepared nanocomposite adsorbents displayed higher capture capacities for iodine vapor (1524–4345 mg·g-1) than iodine solution (187–295 mg·g-1). The as-obtained magnetic nanocomposites can be successfully separated from polluted media by simple filtration or an external magnet, regenerated through washing with ethanol, and reused. Fast capturing, high sorption capacity, rapid separation, and good reusability make the PAN/ZIF-8(x%)/Fe3O4 nanocomposites highly effective adsorbents for the separation of iodine from wastewater. Additionally, PAN/ZIF-8(50%)/Fe3O4 bead can be considered as a potential new antibacterial agent for water and wastewater treatment.

Key words: ZIF-8, Polyacrylonitrile, Composites, Adsorption, Waste treatment, Antibacterial agent