School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224002, PR China.
School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224002, PR China.
Carbohydr Polym. 2023 Jul 15;312:120832. doi: 10.1016/j.carbpol.2023.120832. Epub 2023 Mar 21.
Herein, β-cyclodextrin-containing hybrid polymers (P1, P2 and P3) were prepared through crosslinking partially benzylated β-cyclodextrin (PBCD) by octavinylsilsesquioxane (OVS). P1 stood out in screening studies and the residual hydroxyl groups of PBCD was sulfonate-functionalized. The obtained P1-SONa showed greatly enhanced adsorption towards cationic MPs and maintained the excellent adsorption performance towards neutral MPs. The rate constants (k) of cationic MPs upon P1-SONa were 9.8-34.8 times larger than those upon P1. The equilibrium uptakes of the neutral and cationic MPs upon P1-SONa were above 94.5 %. Meanwhile, P1-SONa demonstrated appreciable adsorption capacities, excellent selectivity, effective adsorption of mixed MPs at environmental levels and good reusability. These results confirmed the great potential of P1-SONa as effective adsorbent to remove MPs from water.
本文通过交联部分苄基化的β-环糊精（PBCD）制备了含β-环糊精的杂化聚合物（P1、P2 和 P3）。在筛选研究中，P1 表现突出，并且 PBCD 的残留羟基被磺酸盐官能化。得到的 P1-SONa 对阳离子 MPs 表现出极大的吸附增强作用，并且对中性 MPs 仍保持优异的吸附性能。阳离子 MPs 在 P1-SONa 上的速率常数（k）比在 P1 上的大 9.8-34.8 倍。中性和阳离子 MPs 在 P1-SONa 上的平衡吸附量均高于 94.5%。同时，P1-SONa 表现出相当大的吸附容量、优异的选择性、在环境水平下有效吸附混合 MPs 以及良好的可重复使用性。这些结果证实了 P1-SONa 作为有效吸附剂从水中去除 MPs 的巨大潜力。
