Adsorption mechanism-based screening of cyclodextrin polymers for adsorption and separation of pesticides from water
Adsorption mechanism-based screening of cyclodextrin polymers for adsorption and separation of pesticides from water
复制标题
基于吸附机理筛选用于从水中吸附分离农药的环糊精聚合物
DOI：
10.1016/j.watres.2011.04.004
复制
发表时间：
2011-05-01
期刊：
影响因子：
12.8
通讯作者：
Chen, Jingwen
中科院分区：
文献类型：
--
作者：
Liu, Huihui;Cai, Xiyun;Chen, Jingwen
根据吸附势与吸附剂-吸附质之间的关系，合理筛选环糊精基聚合物（CDP），以吸附和分离水中的农药。以单一或复合环糊精为复合物，环氧氯丙烷为交联剂，制备了七种球形多孔CDP。聚合物对十种不同农药混合物的吸附动力学和等温线清楚地表明，具有均匀开放网络结构的吸附剂可以通过多种吸附相互作用来吸附农药，例如CD包合物、加载到膨胀水中和网络上的物理吸附。多元回归分析区分了聚合物性质对其吸附潜力的定量贡献，其中CD含量、溶胀能力和孔径似乎是主要影响因素。因此，筛选了三种 CDP（即 β-CDP、RM-CDP 和 HP-CDP）的简单混合物以获得上述必备特性。多重聚合物可以很好地将环境相关水平的农药与水分离。 (C) 2011 Elsevier Ltd. 保留所有权利。
A rational screening of cyclodextrin-based polymer (CDP), in terms of the relationship between adsorption potential and adsorbent-adsorbate, was investigated to adsorb and separate pesticides from water. Seven spherical porous CDPs were prepared with onefold or composite cyclodextrin(s) as complex and epichlorohydrin as cross-linking reagent. The adsorption kinetics and isotherms of the polymers toward a mixture of ten distinct pesticides clearly demonstrate that the adsorbents with a homogeneous open network structure can absorb pesticides via multiple adsorption interactions such as CD inclusion, loading into swelling water and physical adsorption on network. The multivariate regression analysis distinguishes the quantitative contributions of polymer properties to its adsorption potential, among which CD content, swelling capacity and pore size appear to be major influencing factors. Consequently, a facile mixture of three CDPs (i.e., beta-CDP, RM-CDP and HP-CDP) was screened to obtain above prerequisite properties. The multiplex polymer could superiorly separate the pesticides at environmentally relevant levels from water. (C) 2011 Elsevier Ltd. All rights reserved.