Abstract With sugarcane bagasse as the carrier and iron chloride hexahydrate (FeCl3·6H2O) as the iron source, Fe3O4@C materials were prepared in this study. Then the adsorption properties of the prepared adsorbents were characterized by XRD, SEM and VSM analysis. The effects of adsorption time, initial pH value and initial methylene blue concentration on methylene blue adsorption performance were studied and the adsorption mechanism was discussed. The Fe3O4@C materials synergistically exerted the good adsorption capacity and magnetic properties. The adsorption process of methylene blue on Fe3O4@C adsorbent was in accordance with Freundlich isothermal equation and quasi-second-order kinetic model. The saturated adsorption capacity in the experiment of Fe3O4@C material was 270.51 mg/g. The adsorption capacity was high in both acidic and alkaline environments, especially the alkaline environment.

中文翻译：

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一种高吸附亚甲基蓝的Fe3O4@C磁性材料的制备

摘要 本研究以甘蔗渣为载体，六水氯化铁(FeCl3·6H2O)为铁源，制备了Fe3O4@C材料。然后通过XRD、SEM和VSM分析表征了制备的吸附剂的吸附性能。研究了吸附时间、初始pH值和初始亚甲蓝浓度对亚甲蓝吸附性能的影响，探讨了吸附机理。Fe3O4@C 材料协同发挥了良好的吸附能力和磁性。亚甲基蓝在 Fe3O4@C 吸附剂上的吸附过程符合 Freundlich 等温方程和准二级动力学模型。Fe3O4@C材料在实验中的饱和吸附容量为270.51 mg/g。