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Rapid and efficient removal of arsenic from water using electrospun CuO-ZnO composite nanofibers

机译：使用ElectromeOM CuO-ZnO复合纳米纤维快速有效地从水中除去砷

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摘要

Arsenic (As) contamination in water poses a serious threat to public health and other life on earth. To remove arsenic effectively from water, we synthesized CuO-ZnO composite nanofibers using a simple electrospinning technique assisted by post-calcination. The characterization of nanofibers was performed using field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis. The as-prepared nanofibers were further employed as nanoadsorbents for efficient removal of As from water. The favorability of the adsorption process and the maximum adsorption capacity were determined using Langmuir and Freundlich isotherm models. Moreover, the kinetic studies were performed to depict the rate of As sorption onto CuO-ZnO nanofibers. The initial pH of water and the presence of competing anions greatly affect the adsorption efficiency. Therefore, the adsorption experiments were conducted in varying pH environments and with different coexisting anions, such as phosphate, and nitrite. Such a nanofibersbased approach is quite interesting and can be beneficial in combating the current challenges of water pollution.
机译：砷（AS）污染水在地球上对公共卫生和其他生命构成严重威胁。为了从水中有效地除去砷，我们使用通过后煅烧辅助的简单的静电纺丝技术来合成CuO-ZnO复合纳米纤维。使用现场发射扫描电子显微镜（Fe-SEM），透射电子显微镜（TEM）和X射线衍射（XRD）分析进行纳米纤维的表征。制备的纳米纤维进一步用作纳米坯料，以便有效地从水中去除。使用Langmuir和Freundlich等温模型测定吸附过程的有利性和最大吸附容量。此外，进行动力学研究以将吸附率描述在CuO-ZnO纳米纤维上。水的初始pH和竞争阴离子的存在极大地影响了吸附效率。因此，吸附实验在不同的pH环境中进行，并具有不同的共存阴离子，例如磷酸盐和亚硝酸盐。这种纳米纤维的方法非常有趣，可以有利于打击当前水污染的挑战。

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  • 来源
    《RSC Advances》 |2016年第116期|共8页
  • 作者

    Malwal Deepika; Gopinath P.;

  • 作者单位

    Indian Inst Technol Roorkee Ctr Nanotechnol Nanobiotechnol Lab Roorkee 247667 Uttarakhand India;

    Indian Inst Technol Roorkee Ctr Nanotechnol Nanobiotechnol Lab Roorkee 247667 Uttarakhand India;

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  • 正文语种 eng
  • 中图分类 化学;
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