A novel ion imprinted polymer (IIP) on the surface of magnetic multiwall carbon nanotubes (MMWCNTs) was prepared through precipitation polymerization of 4-vinylpyridine as the complexing monomer, 2-hydroxyethyl methacrylate as the co-monomer, the Cr(VI) anion as the template, and ethylene glycol di methacrylate as the cross-linker in the presence of magnetic multi-walled carbon nanotubes as the magnetic component. This novel synthesized sorbent was characterized by using different techniques. Batch adsorption experiments were performed to evaluate the adsorption conditions, selectivity, and reusability. Removal parameters such as contact time, pH, and sorbent dosage were optimized. The maximum adsorption capacity was found to be 56.1 mg(Cr(VI)) g⁻¹(polymer) and the adsorption equilibrium reached in about 30 min. The adsorption process followed the pseudo-second-order equation and the Langmuir adsorption model. The selectivity studies indicated that the synthesized sorbent had a high single selectivity sorption for the Cr(VI) ions in the presence of competing ions.

通过4-乙烯基吡啶作为络合单体，甲基丙烯酸2-羟乙酯作为共聚单体，Cr（VI）阴离子作为沉淀聚合物制备磁性多壁碳纳米管（MMWCNTs）表面的新型离子印迹聚合物（IIP）。在存在磁性多壁碳纳米管作为磁性组分的情况下，以乙二醇二甲基丙烯酸酯作为交联剂。通过使用不同的技术对这种新颖的合成吸附剂进行了表征。进行批量吸附实验以评估吸附条件，选择性和可重复使用性。优化了去除参数，如接触时间，pH和吸附剂用量。发现最大吸附容量为56.1 mg（Cr（VI））g ^-1（聚合物），吸附平衡在约30分钟内达到。吸附过程遵循拟二级方程和Langmuir吸附模型。选择性研究表明，在存在竞争性离子的情况下，合成的吸附剂对Cr（VI）离子具有很高的单一选择性吸附。