Flavonoid compounds suffer from low adsorption efficiency. In this study, hydroxyl-functionalized covalent organic frameworks (DHBD-COF) were used for the efficient adsorption of myricetin. The adsorption performance of DHBD-COF was compared with that of the synthesized DHA-COF and PA-COF. With abundant hydroxyl groups and adaptive pores, DHBD-COF exhibited the highest adsorption capacity (117.99 mg g−1), making it of great significance in improving the adsorption performance of flavonoid compounds.
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