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The facile preparation of novel magnetic zirconia composites with the aid of carboxymethyl chitosan and their efficient removal of dye

机译：借助于羧甲基壳聚糖的新型磁氧化锆复合材料的舒适制备及其高效除去染料

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摘要

Novel composites based on magnetic zirconia was synthesized with the aid of carboxymethyl chitosan (Fe3O4/ZrO2-CMCS) by a facile method. The as-synthesized products were characterized by wide-angle powder X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR). The magnetic zirconia carboxymethyl chitosan (Fe3O4/ZrO2-CMCS) composites consisted of particles which show a better regularity and uniform with 200-300 nm in diameter. The as-obtained Fe3O4/ZrO2-CMCS nanocomposites exhibited high adsorption activity and the adsorption capacity for sunset yellow was up to 143.2 mg g(-1) without adjusting pH of the solution. Interestingly, after the carboxymethyl chitosan being eliminated by calcining in air, the as-obtained Fe3O4/ZrO2 showed enhanced photocatalytic activity under sunlight irradiation. The degradation rate of rhodamine B as well as sunset yellow was 89% and 84% in 240 min, respectively, due to the addition of the Fe3O4/ZrO2 photocatalyst under sunlight irradiation. Both Fe3O4/ZrO2-CMCS and Fe3O4/ZrO2 can be recycled and reused easily, due to magnetism of iron oxide in the composites. Considering the high adsorption performance of Fe3O4/ZrO2-CMCS and the enhanced photocatalytic activity of Fe3O4/ZrO2 for dye stuff, these two nanocomposites can be applied in treating the waste water contaminated by organic dye stuff.
机译：基于磁的氧化锆复合材料的新颖用羧甲基壳聚糖的通过容易的方法的帮助（四氧化三铁/氧化锆-CMCS）合成。通过广角X射线粉末衍射（XRD）所合成的产物进行表征，扫描电子显微镜（SEM），傅里叶变换红外光谱（FTIR）。磁性氧化锆羧甲基壳聚糖（四氧化三铁/氧化锆-CMCS）复合材料包括颗粒，其表现出更好的规律性和均匀的直径200-300纳米。将如此得到的四氧化三铁/氧化锆 - CMCS纳米复合材料显示出高吸附活性和日落黄的吸附容量达143.2毫克克（-1），而无需调整该溶液的pH值。有趣的是，通过在空气中煅烧被淘汰的羧甲基壳聚糖之后，作为得到的四氧化三铁/氧化锆表现出增强的太阳光照射下的光催化活性。若丹明B的降解速率，以及日落黄分别为89％和在240分钟84％，由于添加了太阳光照射下的四氧化三铁/氧化锆光催化剂。两者的Fe3O4 /氧化锆 - CMCS和四氧化三铁/氧化锆可以被回收和再利用容易，由于在复合材料中的氧化铁的磁性。考虑的Fe3O4 /氧化锆 - CMCS的高吸附性能和染料的Fe3O4 / ZrO 2的增强的光催化活性，这两种纳米复合材料可以用于治疗由有机染料污染的废水来施加。

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  • 来源
    《RSC Advances》 |2016年第63期|共8页
  • 作者

    Wu Taiheng; Shao Qian; Ge Shengsong; Bao Liwei; Liu Qingyun;

  • 作者单位

    Shandong Univ Sci &

    Technol Coll Chem &

    Environm Engn Qingdao 266590 Peoples R China;

    Shandong Univ Sci &

    Technol Coll Chem &

    Environm Engn Qingdao 266590 Peoples R China;

    Shandong Univ Sci &

    Technol Coll Chem &

    Environm Engn Qingdao 266590 Peoples R China;

    Shandong Univ Sci &

    Technol Coll Chem &

    Environm Engn Qingdao 266590 Peoples R China;

    Shandong Univ Sci &

    Technol Coll Chem &

    Environm Engn Qingdao 266590 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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