Simple synthesis of a swellable porous β-cyclodextrin-based polymer in the aqueous phase for the rapid removal of organic micro-pollutants from water†,Green Chemistry

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Simple synthesis of a swellable porous β-cyclodextrin-based polymer in the aqueous phase for the rapid removal of organic micro-pollutants from water†
Green Chemistry ( IF 9.3 ) Pub Date : 2019-09-03 , DOI: 10.1039/c9gc02422k
Guizhou Xu _{1,

2,

3,

4,

5} , Xianchuan Xie _{1,

2,

3,

4,

5} , Long Qin _{1,

2,

3,

4,

5} , Xuejiao Hu _{1,

2,

3,

4,

5} , Delin Zhang _{1,

2,

3,

4,

5} , Jun Xu _{1,

2,

3,

4,

5} , Dawei Li _{1,

2,

3,

4,

5} , Xiaowen Ji _{1,

2,

3,

4,

5} , Yu Huang _{1,

2,

3,

4,

5} , Yizhou Tu _{1,

2,

3,

4,

5} , Lu Jiang _{1,

2,

3,

4,

5} , Dongyang Wei _{5,

6,

7,

8}

Affiliation

Regenerable adsorbents with rapid adsorption are highly desirable for water treatment. Cyclodextrin-based adsorbents have been attracting increasing attention because of their high affinity for a variety of organic compounds. All previously reported porous cyclodextrin-based polymers were synthesized in the organic phase, which required a long reaction time and high cost and resulted in an adverse impact on the environment. In this study, a novel macroporous and ultra-microporous beta-cyclodextrin-based polymer (T-E-CDP) was prepared in the aqueous phase for the first time by simultaneously crosslinking beta-cyclodextrin with both flexible and rigid crosslinkers. Owing to the porous structure and easy access of adsorption sites, T-E-CDP exhibited ultra-rapid adsorption of organic micro-pollutants, such as bisphenol A (BPA), 3-phenylphenol (3-PH), and ethinyl estradiol (EE2), with an adsorption rate constant 45 and 581 times those of the commercial adsorbents, activated carbon and XAD-4 resin, respectively. The polymer adsorbent could be easily regenerated by methanol at room temperature and reused many times without a significant decrease in the adsorption performance. More importantly, T-E-CDP could effectively remove many organic pollutants from water at environmentally relevant concentrations and without being affected by the pH level, ionic strength, and humic acid concentration, indicating that it is very suitable for application in practical water treatment. It is particularly important that T-E-CDP can be easily degraded without causing secondary pollution after use, and the synthesis process of T-E-CDP is green, low-cost, and easy to industrialize.

中文翻译：

在水相中简单合成可膨胀的多孔β-环糊精基聚合物，用于从水中快速去除有机微污染物†

具有快速吸附能力的可再生吸附剂非常适合水处理。基于环糊精的吸附剂由于对多种有机化合物的高亲和力而受到越来越多的关注。先前报道的所有基于多孔环糊精的多孔聚合物都是在有机相中合成的，这需要较长的反应时间和较高的成本，并对环境造成不利影响。在这项研究中，通过同时将β-环糊精与柔性和刚性交联剂同时交联，首次在水相中制备了一种新型的基于大孔和超微孔的β-环糊精基聚合物（TE-CDP）。由于多孔结构和易于吸附的位置，TE-CDP表现出对有机微污染物（如双酚A（BPA），3-苯基苯酚（3-PH），和乙炔雌二醇（EE2），其吸附速率常数分别为市售吸附剂，活性炭和XAD-4树脂的45和581倍。该聚合物吸附剂在室温下可以很容易地被甲醇再生，并且可以多次重复使用而不会显着降低吸附性能。更重要的是，TE-CDP可以从环境中有效去除水中的许多有机污染物，而不受pH值，离子强度和腐殖酸浓度的影响，这表明它非常适合在实际水处理中使用。特别重要的是，TE-CDP易于降解，使用后不会造成二次污染，并且TE-CDP的合成过程绿色环保，成本低廉且易于工业化。活性炭和XAD-4树脂的吸附速率常数分别为商用吸附剂的45和581倍。该聚合物吸附剂在室温下可以很容易地被甲醇再生，并且可以多次重复使用而不会显着降低吸附性能。更重要的是，TE-CDP可以从环境中有效去除水中的许多有机污染物，而不受pH值，离子强度和腐殖酸浓度的影响，这表明它非常适合在实际水处理中使用。特别重要的是，TE-CDP易于降解，使用后不会造成二次污染，并且TE-CDP的合成过程绿色环保，成本低廉且易于工业化。活性炭和XAD-4树脂的吸附速率常数分别为商用吸附剂的45和581倍。该聚合物吸附剂在室温下可以很容易地被甲醇再生，并且可以多次重复使用而不会显着降低吸附性能。更重要的是，TE-CDP可以从环境中有效去除水中的许多有机污染物，而不受pH值，离子强度和腐殖酸浓度的影响，这表明它非常适合在实际水处理中使用。特别重要的是，TE-CDP易于降解，使用后不会造成二次污染，并且TE-CDP的合成过程绿色环保，成本低廉且易于工业化。

更新日期：2019-11-11

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