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首页> 外文期刊>Ecotoxicology and Environmental Safety >Enhanced photocatalytic performance of magnetic multi-walled carbon nanotubes/cerium dioxide nanocomposite
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Enhanced photocatalytic performance of magnetic multi-walled carbon nanotubes/cerium dioxide nanocomposite

机译：磁性多壁碳纳米管/二氧化铈纳米复合材料的增强的光催化性能

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摘要

An easily separated photocatalyst, magnetic multi-walled carbon nanotubes/cerium dioxide (MMWCNTs-CeO2) nanocomposite, has been successfully prepared by hydrothermal synthesis and subsequent loading of magnetic nanoparticles. The synthesized nanocomposite was characterized by scanning electron microscope, transmission electron microscopy, X-ray photoelectron spectroscopy, powder X-ray diffraction, and vibrating sample magnetometer. The characterization results indicated the successful synthesis of MMWCNTs-CeO2 nanocomposite. Photocatalytic degradation experiments were conducted to evaluate photocatalytic properties of MMWCNTs-CeO2 by using methylene blue (MB) as a model pollutant. After a light irradiation of two hours, relatively high degradation efficiency (97.5%) of MB was achieved by using MMWCNTs-CeO2 nanocomposite as photocatalyst in the presence of H2O2. The incorporation of magnetic nanoparticles could not only facilitate the separation of photocatalyst from the solution after treatment, but also enhance the photocatalytic degradation efficiency. The results of this study suggested that the synthesized MMWCNTs-CeO2 nanocomposite showed an attractive prospect for application in the treatment of organic wastewater.
机译：易分离的光催化剂，磁性多壁碳纳米管/二氧化铈（MMWCNTs-CeO2）纳米复合材料已通过水热合成和随后的磁性纳米粒子负载成功制备。通过扫描电子显微镜，透射电子显微镜，X射线光电子能谱，粉末X射线衍射和振动样品磁力计对合成的纳米复合材料进行了表征。表征结果表明MMWCNTs-CeO2纳米复合材料的成功合成。以亚甲基蓝（MB）为模型污染物，进行了光催化降解实验，以评价MMWCNTs-CeO2的光催化性能。在两个小时的光照射后，通过在存在H2O2的情况下使用MMWCNTs-CeO2纳米复合材料作为光催化剂，可以实现相对较高的MB降解效率（97.5％）。磁性纳米粒子的掺入不仅可以促进处理后溶液中光催化剂的分离，而且可以提高光催化降解效率。这项研究的结果表明，合成的MMWCNTs-CeO2纳米复合材料在有机废水的处理中具有广阔的应用前景。

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  • 来源
    《Ecotoxicology and Environmental Safety》 |2019年第4期|587-593|共7页
  • 作者

    Feng Kejun; Song Biao; Li Xianfeng; Liao Fangli; Gong Jilai;

  • 作者单位

    Huizhou Univ, Sch Chem & Mat Engn, Huizhou 516007, Guangdong, Peoples R China;

    Hunan Univ, Minist Educ, Coll Environm Sci & Engn, Key Lab Environm Biol & Pollut Control, Changsha 410082, Hunan, Peoples R China;

    Huizhou Univ, Sch Chem & Mat Engn, Huizhou 516007, Guangdong, Peoples R China;

    Huizhou Univ, Sch Chem & Mat Engn, Huizhou 516007, Guangdong, Peoples R China;

    Hunan Univ, Minist Educ, Coll Environm Sci & Engn, Key Lab Environm Biol & Pollut Control, Changsha 410082, Hunan, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);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

    Photocatalysis; Multi-walled carbon nanotubes; Cerium dioxide; Magnetic separation;

    机译：光催化;多壁碳纳米管;二氧化铈;磁分离;

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