A novel crosslinked water-insoluble β-cyclodextrin polymer was synthesized from reacting thiourea (TU) with β-cyclodextrin (β-CD) and epichlorohydrin (ECH). The structure of fabricated β-cyclodextrin-epichlorohydrin-thiourea (β-CD-ECH-TU) polymer was characterized by fourier transform infrared (FT-IR), nuclear magnetic resonance (NMR), scanning electron microscope (SEM), thermal gravimetric analysis (TGA) and elemental analyses. The porous β-CD-ECH-TU polymer was used an attractive and effective adsorbents for the removal of heavy metal ions such as lead(II) (Pb²⁺) and cadmium(II) (Cd²⁺) ions from wastewater. The effect of contact time and initial adsorbent dose on the extent of adsorption was investigated. The equilibrium data obtained by experiments were analyzed by Langmuir, Freundlich and Temkin isotherms. The results were fitted with Langmuir model at ambient temperature. A maximum adsorption capacity of (q_m) 285.126 and 126.58 (mg/g) was obtained for Pb²⁺ and Cd²⁺ respectively and the selectivity order could be given as Pb²⁺ > Cd²⁺. The adsorption effectiveness of the β-CD-ECH-TU polymer remained constant through five regeneration cycles.

硫脲（TU）与β-环糊精（β-CD）和环氧氯丙烷（ECH）反应合成了一种新型的交联的水不溶性β-环糊精聚合物。制备的β-环糊精-表氯醇-硫脲（β-CD-ECH-TU）聚合物的结构通过傅立叶变换红外光谱（FT-IR），核磁共振（NMR），扫描电子显微镜（SEM），热重分析进行表征（TGA）和元素分析。多孔的β-CD-ECH-TU聚合物被用作有吸引力的有效吸附剂，用于去除重金属离子，例如铅（II）（Pb ²⁺）和镉（II）（Cd ²⁺）废水中的离子。研究了接触时间和初始吸附剂剂量对吸附程度的影响。实验获得的平衡数据通过Langmuir，Freundlich和Temkin等温线进行分析。在室温下将结果与Langmuir模型拟合。对Pb ²⁺和Cd ²⁺的最大吸附容量分别为（q _m）285.126和126.58（mg / g），选择性顺序为Pb ²⁺ > Cd ²⁺。在五个再生循环中，β-CD-ECH-TU聚合物的吸附效率保持恒定。