Porous magnetic cellulose/Fe₃O₄ beads (CFBs), consisting of cellulose as matrix and ferrosoferric oxide, were successfully fabricated from microcrystalline cellulose dissolved in an ionic liquid and further modified with glutaric anhydride. The porous structure of modified magnetic cellulose/Fe₃O₄ beads (MCFBs) was created by nano-sized calcium carbonate (CaCO₃). The resulting MCFBs were well characterized and employed as effective adsorbents for removal of dyes from aqueous solution. The adsorption behaviors indicated that the adsorption kinetics was preferably fitted to the pseudo-second-order kinetic model; whereas the adsorption isotherms were well described by Langmuir model with the maximum adsorption capacity of 1186.8 and 151.8 mg/g for methylene blue (MB) and Rhodamine B (RhB), respectively. Moreover, MCFBs are magnetically separable, thus leading to a range of green-based and promising adsorbents towards organic pollutants with easy recovery.

由溶解在离子液体中并用戊二酸酐进一步改性的微晶纤维素成功制备了多孔纤维素纤维素/ Fe ₃ O ₄珠（CFBs），由纤维素作为基质和四氧化_三铁组成。纳米碳酸钙（CaCO ₃）形成了改性磁性纤维素/ Fe ₃ O ₄珠（MCFBs）的多孔结构。）。所得的MCFBs具有良好的特性，可作为有效的吸附剂从水溶液中去除染料。吸附行为表明，吸附动力学优选适合拟二阶动力学模型。Langmuir模型很好地描述了吸附等温线，亚甲基蓝（MB）和若丹明B（RhB）的最大吸附容量分别为1186.8和151.8 mg / g。此外，MCFBs可以磁分离，因此可产生多种基于绿色的有前途的吸附剂，可轻松回收有机污染物。