Enhanced photocatalytic performance of magnetic multi-walled carbon nanotubes/cerium dioxide nanocomposite

被引：22
作者：
Feng, Kejun [1 ]
Song, Biao [2 ]
Li, Xianfeng [1 ]
Liao, Fangli [1 ]
Gong, Jilai [2 ]
机构：
[1] Huizhou Univ, Sch Chem & Mat Engn, Huizhou 516007, Guangdong, Peoples R China
[2] Hunan Univ, Minist Educ, Coll Environm Sci & Engn, Key Lab Environm Biol & Pollut Control, Changsha 410082, Hunan, Peoples R China
来源：
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY | 2019年 / 171卷
关键词：
Photocatalysis; Multi-walled carbon nanotubes; Cerium dioxide; Magnetic separation; SOLAR PHOTOCATALYSIS; DEGRADATION; WATER; COMPOSITE; OXIDATION; CATALYST; TEMPERATURE; ADSORPTION; REACTORS; NI(II);
D O I：
10.1016/j.ecoenv.2018.12.099
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
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.
引用
收藏
页码：587 / 593
页数：7
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