【摘要】 该研究制备了铁基金属有机骨架MIL-88B（Fe）衍生磁性多孔碳材料Fe@Fe₃C-C，并将其用于水中双酚A（BPA）的高效吸附。采用X射线衍射、扫描电镜和比表面积及孔径分析等手段对材料的晶体结构、形貌和比表面积进行表征。结果表明，在高温作用下，MIL-88B（Fe）转化成Fe、Fe₃C共掺杂碳材料（Fe@Fe₃C-C）。Fe@Fe₃C-C呈具有层次的炸裂状薄片结构且表面较为粗糙，比表面积为280.48 m²/g，与MIL-88B（Fe）相比增加了17倍。吸附实验表明，与MIL-88B（Fe）相比，高温煅烧（≥600℃）可以明显提升吸附性能。0.5 g/L的Fe@Fe₃C-C在10 min内对10 mg/L的BPA去除率高达95%。材料具有较广的pH值适用范围（pH 2.0～10.0）和较强的抗无机盐离子（100 mmol/L）干扰能力，并能够用于高盐环境下的BPA吸附。拟二级动力学模型符合BPA在Fe@Fe₃C-C上的吸附动力学曲线，吸附过程符合Langmuir模型。循环实验表明，Fe@Fe₃C-C易于从水体中回收，且具有良好的可再生性能。上述研究结果表明Fe@Fe₃C-C对水中BPA的去除具有较大的潜力。通过X射线光电子能谱、Zeta电位等表征探究吸附机理，结果显示Fe@Fe₃C-C的主要作用机制为微孔填充、静电作用及π-π作用。更多还原

【Abstract】 A magnetic porous carbon material Fe@Fe₃C-C was prepared by derivatizing an iron-based metal organic framework MIL-88B（Fe） in this paper,and applied to the efficient adsorption of bisphenol A（BPA） in water.The crystal structure,morphology and surface area of the material were characterized by X-ray diffraction,scanning electron microscopy,surface area and pore size analysis.The results showed that MIL-88B（Fe） was transformed into Fe and Fe₃C co-doped carbon material（Fe@Fe₃C-C） under high temperature,which had a layered burst-like sheet structure with rough surface.The specific surface area of Fe@Fe₃C-C was 280.48 m²/g,17 times higher than that of MIL-88B（Fe）.The adsorption experiment showed that,compared with MIL-88B（Fe）,calcination at high temperature（≥600℃）could improve the adsorption performance significantly.The removal rate of BPA of 10 mg/L reached 95%within 10 min when the amount of Fe@Fe₃C-C was 0.5 g/L.The material had a wide range of pH application（pH 2.0-10.0） and a strong ability against ionic interference（100 mmol/L）,and was suitable for BPA adsorption in high-salt environment.The pseudo-second-order kinetic model accords with the adsorption kinetics curve for BPA on Fe@Fe₃C-C,and the adsorption process accords with the Langmuir model.Cyclic experiments showed that Fe@Fe₃C-C has a good recycling ability and could be easily recovered from water.X-ray photoelectron spectroscopy and zeta potential were used to investigate the adsorption mechanism.The main mechanisms of Fe@Fe₃C-C wereπ-πinteraction,charge interaction and micropore filling.These results indicated that Fe@Fe₃C-C has a great application potential in the removal of BPA in water.更多还原