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首页> 外文期刊>Journal of Hazardous Materials >Quinone-modified NH2-MIL-101(Fe) composite as a redox mediator for improved degradation of bisphenol A
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Quinone-modified NH2-MIL-101(Fe) composite as a redox mediator for improved degradation of bisphenol A

机译:醌改性的NH2-MIL-101(Fe)复合材料作为氧化还原介体,可改善双酚A的降解

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摘要

A novel quinone-modified metal-organic frameworks NH2-MIL-101(Fe) was synthesized using a simple chemical method under mild condition. The introduced 2-anthraquinone sulfonate (AQS) can be covalently modified with NH2-MIL-101(Fe) and acts as a redox mediator to enhance the degradation of bisphenol A (BPA) via persulfate activation. The obtained AQS-NH-MIL-101(Fe) was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectra, cyclic voltammetry and electrochemical impedance spectroscopy. AQS-NH-MIL-101(Fe) exhibited better catalytic performance compared with NH2-MIL-101(Fe) and NH2-MIL-101(Fe) with free AQS (NH2-MIL-101(Fe)/AQS). That is, AQS-NH-MIL-101(Fe) was proved to be the most effective in that more than 97.7% of BPA was removed. The degradation rate constants (k) of AQS-NH-MIL-101(Fe) was 9-fold higher than that of NH2-MIL-101(Fe) and 7-fold higher than NH2-MIL-101(Fe)/AQS, indicating that AQS is a great electron-transfer mediator when modified with NH2-MIL-101(Fe). Based on the above results, the possible mechanism of catalytic reaction has been investigated in view of the trapping experiments. In addition, the AQS-NH-MIL-101(Fe) catalyst exhibited excellent stability and can be used several times without significant deterioration in performance. (C) 2016 Elsevier B.V. All rights reserved.
机译:在温和的条件下,采用简单的化学方法合成了一种新型的醌改性的金属有机骨架NH2-MIL-101(Fe)。引入的2-蒽醌磺酸盐(AQS)可以与NH2-MIL-101(Fe)共价修饰,并充当氧化还原介质,通过过硫酸盐活化来增强双酚A(BPA)的降解。通过傅立叶变换红外光谱,X射线衍射,扫描电子显微镜,X射线光电子能谱,循环伏安法和电化学阻抗谱对所得的AQS-NH-MIL-101(Fe)进行表征。与带有游离AQS(NH2-MIL-101(Fe)/ AQS)的NH2-MIL-101(Fe)和NH2-MIL-101(Fe)相比,AQS-NH-MIL-101(Fe)表现出更好的催化性能。就是说,AQS-NH-MIL-101(Fe)被证明是最有效的,因为去除了超过97.7%的BPA。 AQS-NH-MIL-101(Fe)的降解速率常数(k)比NH2-MIL-101(Fe)的降解速率常数高9倍,比NH2-MIL-101(Fe)/ AQS的降解速率常数高7倍,表明当用NH2-MIL-101(Fe)改性时,AQS是一种出色的电子传递介质。基于以上结果,针对捕集实验研究了催化反应的可能机理。此外,AQS-NH-MIL-101(Fe)催化剂显示出极好的稳定性,可以使用几次而不会显着降低性能。 (C)2016 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Journal of Hazardous Materials》 |2017年第ptab期|665-672|共8页
  • 作者单位

    Univ Jinan, Sch Resources & Environm, Jinan, Shandong, Peoples R China;

    Univ Jinan, Sch Resources & Environm, Jinan, Shandong, Peoples R China;

    Univ Jinan, Sch Resources & Environm, Jinan, Shandong, Peoples R China;

    Univ Jinan, Sch Resources & Environm, Jinan, Shandong, Peoples R China;

    Univ Jinan, Sch Resources & Environm, Jinan, Shandong, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    2-Anthraquinone sulfonate; Redox mediator; Metal-organic frameworks; Catalyst; BPA degradation;

    机译:2-蒽醌磺酸盐;氧化还原介质;金属有机骨架;催化剂;双酚A降解;

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