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首页> 外文期刊>RSC Advances >Effective adsorption of phenolic pollutants from water using beta-cyclodextrin polymer functionalized Fe3O4 magnetic nanoparticles
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Effective adsorption of phenolic pollutants from water using beta-cyclodextrin polymer functionalized Fe3O4 magnetic nanoparticles

机译：使用β-环糊精聚合物官能化Fe3O4磁性纳米粒子有效地吸附水中酚醛污染物

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摘要

beta-Cyclodextrin polymer functionalized magnetic nanoparticles (CDP-MNPs) were prepared with a one-step co-precipitation method by anchoring a carboxymethyl-beta-cyclodextrin polymer (CDP) onto the surface of Fe3O4 magnetic nanoparticles (MNPs). The CDP-MNPs possess the fascinating features of superparamagnetism and adsorption properties, which are favorable for the purpose of removing bisphenol A and resorcin. The maximum adsorption capacity for bisphenol A could reach values up to 74.63 mg g(-1) at 25 degrees C, which is higher than those of previously reported magnetic adsorbents. Moreover, for the removal of resorcin by CDP-MNPs, the maximum uptake amounted to 114.91 mg g(-1) under the same conditions. The adsorption kinetics and isotherm data fitted well with a pseudo-second-order kinetic model and the Langmuir isotherm, respectively. The CD polymer grafted onto the MNPs enhanced the adsorption capacity because of the host-guest interaction of cyclodextrin and the hydrogen bonding of the polymer network with the phenolic compounds. Additionally, a good recyclability of the CDP-MNPs was observed over three usage cycles, with only a slight decline in adsorption capability.
机译：通过将羧甲基 - β-环糊精聚合物（CDP）锚固到Fe3O4磁性纳米颗粒（MNP）的表面上，用一步共沉淀法制备β-环糊精聚合物官能化磁性纳米颗粒（CDP-MNP）。 CDP-MNPS具有超顺磁性和吸附性能的迷人特征，这有利于除去双酚A和间聚蛋白。双酚A的最大吸附能力在25摄氏度下达到高达74.63mg（-1）的值，其高于先前报告的磁性吸附剂。此外，为了通过CDP-MNP去除间聚蛋白，在相同条件下最大摄取量为114.91mg（-1）。吸附动力学和等温数据分别适用于伪二阶动力学模型和Langmuir等温线。接枝到MNP上的Cd聚合物由于环糊精与聚合物网络与酚类化合物的宿主相互作用和聚合物网络的氢键相互作用而增强了吸附能力。另外，在三个使用循环中观察到CDP-MNP的良好可回收性，吸附能力略有下降。

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  • 来源
    《RSC Advances》 |2016年第84期|共9页
  • 作者

    Gong Tao; Zhou Yehong; Sun Linlin; Liang Wenting; Yang Jun; Shuang Shaomin; Dong Chuan;

  • 作者单位

    Shanxi Univ Dept Chem Inst Environm Sci Taiyuan 030006 Peoples R China;

    Shanxi Univ Dept Chem Inst Environm Sci Taiyuan 030006 Peoples R China;

    Shanxi Univ Dept Chem Inst Environm Sci Taiyuan 030006 Peoples R China;

    Shanxi Univ Dept Chem Inst Environm Sci Taiyuan 030006 Peoples R China;

    Univ Western Ontario Dept Mech &

    Mat Sci London ON N6G 0J3 Canada;

    Shanxi Univ Dept Chem Inst Environm Sci Taiyuan 030006 Peoples R China;

    Shanxi Univ Dept Chem Inst Environm Sci Taiyuan 030006 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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