Double-ligand zirconium MOFs adsorbent as well as preparation method and application thereof
An adsorbent and double-ligand technology, applied in the field of environmental treatment, can solve the problems of serious agglomeration, complex synthesis, poor crystallinity, etc., and achieve the effect of strong hydrophilicity, high stability, and efficient removal
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Embodiment 1
[0027] A preparation method of double-ligand zirconium MOFs adsorbent, comprising the following steps:
[0028] 1) 0.006mol of zirconium nitrate, 0.012mol of 2-aminoterephthalic acid (NH 2 -H 2 BDC), 0.009mol of 2-hydroxyterephthalic acid (HO-H 2 BDC), 5mL of acetic acid and 60mL of N,N-dimethylformamide were mixed and stirred at 600r / min for 2 hours to obtain an orange-red solution;
[0029] 2) Put the above orange-red solution in a reaction kettle and react in an oven for 24 hours at a reaction temperature of 150°C;
[0030] 3) After the reaction, filter, wash, and vacuum-dry at 60° C. for 24 hours to obtain a light yellow double-ligand zirconium MOFs solid powder, and the nitrogen content in the product is about 1.721%.
[0031] Performance tests were performed on the double-ligand zirconium MOFs adsorbent prepared above:
[0032] combine figure 1 As shown, the double-ligand zirconium MOFs adsorbent has good dispersibility and crystallinity, and its morphology is a mic...
Embodiment 2
[0039] A preparation method of double-ligand zirconium MOFs adsorbent, comprising the following steps:
[0040] 1) Mix 0.006mol of zirconium nitrate, 0.009mol of 2-aminoterephthalic acid, 0.009mol of 2-hydroxyterephthalic acid, 5mL of acetic acid and 50mL of N,N-dimethylformamide at a speed of Stir at 700r / min for 3 hours to obtain an orange-red solution.
[0041]2) Put the above orange-red solution in a reaction kettle and react in an oven for 23 hours at a reaction temperature of 160°C;
[0042] 3) After the reaction, filter, wash, and vacuum-dry at 60° C. for 24 hours to obtain a light yellow double-ligand zirconium MOFs solid powder, and the nitrogen content in the product is about 0.932%.
[0043] The prepared double-ligand zirconium MOFs adsorbent was applied to the adsorption of norfloxacin in water:
[0044] Weigh 10 mg of the double-ligand zirconium MOFs adsorbent prepared in Example 2, add it to 100 mL of water samples containing norfloxacin at a concentration of 3...
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