Bisphenol A (BPA), as a common endocrine disruptor, is widely present in water environment. It can migrate into food and gradually accumulate in organisms, posing potential health threats to humans. Herein, covalent organic frameworks (COFs) with different pore sizes (15.56 Å for TpPa-2, 21.95 Å for TpBD, and 30.29 Å for TFPB-BD) were synthesized by solvothermal reaction. The corresponding magnetic COFs (MCOFs) were conveniently prepared by co-precipitation method and were used for adsorption of BPA. The adsorption capacity of Fe₃O₄/TpPa-2, Fe₃O₄/TpBD, Fe₃O₄/TFPB-BD reached 44.85, 24.14 and 2.61 mg g⁻¹ respectively, that is Fe₃O₄/TpPa-2>Fe₃O₄/TpBD>Fe₃O₄/TFPB-BD. The adsorption kinetic fitted the pseudo-second-order kinetic model and the adsorption isotherm fitted the Freundlich isothermal model. Both models demonstrated that the adsorption of BPA is based on heterogeneous surface. In addition, recycling experiments indicated that after five cycles of adsorption/desorption, the adsorption capacity can still reach 76.39% of the first use, indicating that recyclable Fe₃O₄/TpPa-2 is a potential adsorbent and can be further applied to the adsorption of environmental pollutants.

双酚A（BPA）作为一种常见的内分泌干扰物，广泛存在于水环境中。它可以迁移到食物中，并逐渐在生物体内积累，对人类健康构成潜在威胁。在此，通过溶剂热反应合成了具有不同孔径（TpPa-2 为 15.56 Å，TpBD 为 21.95 Å，TFPB-BD 为 30.29 Å）的共价有机骨架（COF）。相应的磁性COFs（MCOFs）通过共沉淀法方便地制备并用于吸附BPA。Fe ₃ O ₄ /TpPa-2、Fe ₃ O ₄ /TpBD、Fe ₃ O ₄ /TFPB-BD的吸附量分别达到44.85、24.14和2.61 mg g ^-1，即Fe ₃ O₄ /TpPa-2>Fe ₃ O ₄ /TpBD>Fe ₃ O ₄ /TFPB-BD。吸附动力学符合准二级动力学模型，吸附等温线符合Freundlich等温模型。两种模型都表明 BPA 的吸附是基于异质表面的。此外，回收实验表明，经过5次吸附/脱附循环后，吸附量仍能达到首次使用的76.39%，表明可回收Fe ₃ O ₄ /TpPa-2是一种潜在的吸附剂，可进一步应用于吸附环境污染物。