Study on the adsorption properties of MOF materials for active ingredients in tangerine peel
Objective:The synthesis route of ZIF-8 was verified.Its structural correctness was characterized,and the adsorption range was determined preliminarily.The adsorption capacity of ZIF-8 for hesperidin was investi-gated,and the best adsorption conditions were selected.Methods:ZIF-8 was prepared by stirring at room tem-perature with methanol as solvent,2-methylimidazole as organic ligand and zinc nitrate hexahydrate as raw ma-terial.The effects of adsorbent mass,shaking time and liquid volume on the adsorption of hesperidin were stud-ied.Results:ZIF-8 could be successfully prepared by stirring at room temperature.It was found that when the mass of adsorbent was 10 mg,the shaking time was 8 h,and the volume of hesperidin solution was 20 mL,the adsorption yield of hesperidin was the highest,which was 57.98％.Conclusion:ZIF-8 has a large specific sur-face area and pore volume,and hesperidin has the opportunity to enter the pore to complete the adsorption,thereby improving the utilization rate of hesperidin.
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