Preparation of magnetic Fe3O4@UIO-66-NH2 materials and their adsorption on methylene blue
Fe3O4 was synthesized by hydrothermal method,Fe3O4 nanoparticles were de-grouped with mercaptoacetic acid(MAA),and then the magnetic metal-organic framework material Fe3O4@UIO-66-NH2 was prepared using UiO-66 as a template,and the methylene blue was adsorbed.The prepared magnetic materials were characterized by scanning electron microscopy and transmission electron microscopy,and the effects of material dosage,oscillation time,pH and other factors on the adsorption properties of the materials were investigated.The results showed that when the initial concentration of methylene blue was 4.00 mg/L,the material dosage was 4 mg,the oscillation time was 90 min,and the pH was 9,the adsorption effect of Fe3O4@UIO-66-NH2 on methylene blue was better,with an adsorption rate of 45.67%and an adsorption capacity of 15.03 mg/g.
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