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首页> 外文期刊>Journal of Polymers and the Environment >Preparation of Fe3O4/TiO2/Polypyrrole Ternary Magnetic Composite and Using as Adsorbent for the Removal of Acid Red G
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Preparation of Fe3O4/TiO2/Polypyrrole Ternary Magnetic Composite and Using as Adsorbent for the Removal of Acid Red G

机译：Fe3O4 / TiO2 /聚吡咯三元磁性复合材料的制备及其作为吸附剂去除酸性红G的研究

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摘要

This study focuses on the adsorption performance of the Fe3O4/TiO2/PPy ternary composite for Acid Red G from aqueous solution. Firstly, Fe3O4/TiO2/PPy Ternary composite was synthesized by introducing Fe3O4 into the preparation process of TiO2/PPy composite. Fourier transformation infrared spectra (FT-IR), X-ray diffraction patterns (XRD) and the magnetization test confirmed the existence of Fe3O4 in the ternary composite. The specific surface area and the zeta potential test suggested that the as-prepared Fe3O4/TiO2/PPy composite showed the similar surface nature to the TiO2/PPy composite. The obtained Fe3O4/TiO2/PPy composite exhibited an excellent adsorption capacity of 161.8 mg/g for Acid Red G (ARG) from aqueous solution and can reach the equilibrium within 20 min. The composite can be easily retrieved from the solution by an external magnetic field and regenerated simply by an alkaline/acidic alternate process. The composite retained about 86 % of the adsorption efficiency after six adsorption/desorption cycles. The adsorption isotherms and kinetics of the composite can be well described by Langmuir and pseudo-second-order models, respectively. The electrostatic interaction and the hydrogen bonding were the main adsorption mechanism. This illustrates that the introduced Fe3O4 not only maintained the adsorption capability of TiO2/PPy but also improve the reclaim performance.
机译：本研究主要研究Fe3O4 / TiO2 / PPy三元复合材料对水溶液中酸性红G的吸附性能。首先，通过将Fe3O4引入TiO2 / PPy复合材料的制备过程中，合成了Fe3O4 / TiO2 / PPy三元复合材料。傅里叶变换红外光谱（FT-IR），X射线衍射图谱（XRD）和磁化试验证实三元复合物中存在Fe3O4。比表面积和ζ电势测试表明，所制备的Fe 3 O 4 / TiO 2 / PPy复合材料显示出与TiO 2 / PPy复合材料相似的表面性质。所制得的Fe3O4 / TiO2 / PPy复合材料对水溶液中的酸性红G（ARG）的吸附能力为161.8 mg / g，在20分钟内即可达到平衡。复合物可以很容易地通过外部磁场从溶液中回收，并且可以通过碱性/酸性交替过程简单地再生。在六个吸附/解吸循环后，复合材料保留了约86％的吸附效率。复合材料的吸附等温线和动力学可以分别通过Langmuir模型和拟二阶模型很好地描述。静电相互作用和氢键是主要的吸附机理。这说明引入的Fe3O4不仅保持了TiO2 / PPy的吸附能力，而且提高了回收性能。

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  • 来源
    《Journal of Polymers and the Environment》 |2017年第3期|781-791|共11页
  • 作者

    Feng Jiangtao; Sun Nana; Wu Danyu; Yang Honghui; Xu Hao; Yan Wei;

  • 作者单位

    Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Shaanxi, Peoples R China|Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Ternary composite; Polypyrrole; Magnetic; Adsorption; Organic dye removal;

    机译：三元复合材料;聚吡咯;磁性;吸附;去除有机染料;

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