Efficient catalytic degradation of tetracycline hydrochloride by bamboo charcoal fiber bundle-loaded MOF-derived magnetic Co/CoO porous polyhedron

Authors：Dai, Lanling; Cui, Ce; Yang, Mengyuan; Jiang, Shan; Lan, Jianwu; Guo, Ronghui^*

Source：WATER SCIENCE AND TECHNOLOGY, 2023, 88(8): 2033-2053.

DOI：10.2166/wst.2023.323

• bamboo charcoal fiber bundles
• catalytic degradation
• Co/CoO nanoparticles
• peroxymonosulfate
• tetracycline hydrochloride
• ZIF-67

Both the well-being of living things and the ecosystem of the planet have been negatively impacted by antibiotic residues in the water environment. There has been a lot of interest in the catalyst made of metal-carbon compounds formed from metal-organic frameworks (MOFs) as a potential solution for activating peroxymonosulfate (PMS). In this study, zeolitic imidazolate frameworks (ZIF-67) on bamboo fiber bundles were pyrolyzed to produce magnetic Co/CoO nanoparticles with porous polyhedrons mounted on bamboo charcoal fiber bundles (BCFB@PCo/CoO). The specific surface area of the obtained BCFB@PCo/CoO composite arrived at 302.41 m(2)/g with abundant active sites. Considering the tetracycline hydrochloride (TCH) as the target contaminant, the effects of potential factors, including PMS dosage, interference ions, and temperature on catalytic degradation efficiencies were investigated. The antibacterial properties of the BCFB@PCo/CoO composite were also evaluated and the possible degradation pathways were explored by liquid chromatography-mass spectrometry (LC-MS) analysis. The catalytic degradation efficiency for TCH could reach up to 99.94% within 15 min under certain conditions. Catalytic mechanism explorations of the BCFB@PCo/CoO/PMS system reveal that the MOF-derived magnetic Co/CoO nanoparticles embedded in bamboo charcoal microfibril bundles promote the synergistic interaction of both radical and non-radical pathways for the catalytic degradation of TCH. The novel BCFB@PCo/CoO composite provides an alternative to deal with the antibiotic-containing wastewater.

• Institution
  苏州大学; 四川大学; 南昌航空大学