Synthesis of magnetic nanocomposite Fe3O4@ZIF-8@ZIF-67 and removal of tetracycline in water

Song, Xu; Mo, Jingqian; Fang, Yuting; Luo, Shumin; Xu, Jingjing; Wang, Xu

Synthesis of magnetic nanocomposite Fe3O4@ZIF-8@ZIF-67 and removal of tetracycline in water

2022

We prepared a double-layer magnetic nanocomposite Fe₃O₄@ZIF-8@ZIF-67 by layer-by-layer self-assembly. Fe₃O₄@ZIF-8@ZIF-67 was used to remove tetracycline from an aqueous solution via a combination of adsorption and Fenton-like oxidation. Depending on the outstanding porous structure of the Fe₃O₄@ZIF-8@ZIF-67, a high adsorption capacity for tetracycline was 356.25 mg g⁻¹, with > 95.47% removal efficiency within 100 min based on Fenton-like oxidation. To better understand the mechanisms involved in integrated adsorption and Fenton-like oxidation, various advanced characterization techniques were used to monitor the changes in morphology and composition of Fe₃O₄@ZIF-8@ZIF-67 before and after removal of tetracycline. Scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDS), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) all supported adsorption and Fenton oxidation of tetracycline. This study extends the application of Fe₃O₄@ZIF-8@ZIF-67 for environmental remediation.

Показать больше [+]