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首页> 外文期刊>Applied Surface Science >High-efficiency adsorption of norfloxacin using octahedral UIO-66-NH_2 nanomaterials: Dynamics, thermodynamics, and mechanisms
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High-efficiency adsorption of norfloxacin using octahedral UIO-66-NH_2 nanomaterials: Dynamics, thermodynamics, and mechanisms

机译：使用八面体UIO-66-NH_2纳米材料的NORFLOXACIN的高效吸附：动力学，热力学和机制

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摘要

Antibiotics abuse has been a significant threat to the environment and human health. In this study, we successfully synthesized highly stable amino-functionalized Zr-based metal-organic frameworks (UiO-66-NH2) and studied the adsorption behaviors of norfloxacin (NOR) in water. The adsorption capacities of UiO-66-NH2 reached a maximum of 222.5 mg/g for NOR, which were considerably higher than that of most reported adsorbents. Moreover, the equilibrium time (6 h) was less than that of several previously reported adsorbents. Ionic-strength-influenced experiments showed that NaCl and CaCl2 aqueous solutions could improve the removal efficiency of NOR. The presence of humic acid could barely affect the adsorption amount. At a concentration of 10 mg/L, the highest partition coefficient of 20.9 mg/g/mu M was obtained, and the removal rate of NOR was as high as 91.6%, implying that UiO-66-NH2 offered considerable adsorption performance at a low concentration of NOR. In addition, UiO-66-NH2 exhibited good regeneration efficiency, thus offering the possibility to remove norfloxacin from sewage. Finally, several credible adsorption mechanisms were proposed. The results will aid us to comprehend the surface interaction between organic micropollutants and UiO-66-NH2 and prefigure the potential of UiO-66-NH2 as a novel adsorbent for the removal of NOR.
机译：抗生素滥用对环境和人类健康有重大威胁。在这项研究中，我们成功地合成了高度稳定的氨基官能化ZR基金属 - 有机框架（UIO-66-NH2），并研究了诺氟沙星（NOR）在水中的吸附行为。 UIO-66-NH2的吸附能力最多达到222.5mg / g，也不高于大多数报道的吸附剂。此外，平衡时间（6小时）小于几种先前报道的吸附剂。离子强度影响的实验表明，NaCl和CaCl2水溶液可以提高尚不清除的效率。腐殖酸的存在几乎不能影响吸附量。浓度为10mg / L，获得20.9mg / g / mu m的最高分区系数，除去率也高达91.6％，这意味着UIO-66-NH2提供了相当大的吸附性能低浓度也不。此外，UIO-66-NH2表现出良好的再生效率，从而提供从污水中除去诺氟沙星的可能性。最后，提出了几种可信的可信吸附机制。结果将有助于我们理解有机微量舒适剂和UIO-66-NH2之间的表面相互作用，并将UIO-66-NH2的电位作为一种新的吸附剂，用于去除也不成。

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  • 来源
    《Applied Surface Science》 |2020年第jul15期|146226.1-146226.10|共10页
  • 作者

    Fang Xun; Wu Shibiao; Wu Yaohua; Yang Wu; Li Yulian; He Junyong; Hong Peidong; Nie Mingxing; Xie Chao; Wu Zijian; Zhang Kaisheng; Kong Lingtao; Liu Jinhuai;

  • 作者单位

    Chinese Acad Sci Inst Intelligent Machines Nanomat & Environm Detect Lab Hefei 230031 Peoples R China|Anhui Jianzhu Univ Adv Bldg Mat Key Lab Anhui Prov Hefei 230601 Peoples R China;

    Anhui Jianzhu Univ Adv Bldg Mat Key Lab Anhui Prov Hefei 230601 Peoples R China;

    Chinese Acad Sci Inst Intelligent Machines Nanomat & Environm Detect Lab Hefei 230031 Peoples R China;

    Chinese Acad Sci Inst Intelligent Machines Nanomat & Environm Detect Lab Hefei 230031 Peoples R China|Univ Sci & Technol China Dept Chem Hefei 230026 Anhui Peoples R China;

    Chinese Acad Sci Inst Intelligent Machines Nanomat & Environm Detect Lab Hefei 230031 Peoples R China|Univ Sci & Technol China Dept Chem Hefei 230026 Anhui Peoples R China;

    Chinese Acad Sci Inst Intelligent Machines Nanomat & Environm Detect Lab Hefei 230031 Peoples R China;

    Chinese Acad Sci Inst Intelligent Machines Nanomat & Environm Detect Lab Hefei 230031 Peoples R China|Univ Sci & Technol China Dept Chem Hefei 230026 Anhui Peoples R China;

    Chinese Acad Sci Inst Intelligent Machines Nanomat & Environm Detect Lab Hefei 230031 Peoples R China|Univ Sci & Technol China Dept Chem Hefei 230026 Anhui Peoples R China;

    Chinese Acad Sci Inst Intelligent Machines Nanomat & Environm Detect Lab Hefei 230031 Peoples R China;

    Chinese Acad Sci Inst Intelligent Machines Nanomat & Environm Detect Lab Hefei 230031 Peoples R China;

    Chinese Acad Sci Inst Intelligent Machines Nanomat & Environm Detect Lab Hefei 230031 Peoples R China;

    Chinese Acad Sci Inst Intelligent Machines Nanomat & Environm Detect Lab Hefei 230031 Peoples R China;

    Chinese Acad Sci Inst Intelligent Machines Nanomat & Environm Detect Lab Hefei 230031 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    UiO-66-NH2; Antibiotics; Norfloxacin; Water treatment; Adsorption mechanisms;

    机译：UIO-66-NH2;抗生素;NORFLOXACIN;水处理;吸附机制;

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