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首页> 外文期刊>RSC Advances >Electrochemical hydrodechlorination of perchloroethylene in groundwater on a Ni-doped graphene composite cathode driven by a microbial fuel cell
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Electrochemical hydrodechlorination of perchloroethylene in groundwater on a Ni-doped graphene composite cathode driven by a microbial fuel cell

机译：用微生物燃料电池驱动的Ni掺杂石墨烯复合阴极的地下水中高氯乙烯的电化学水化学氯化物

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摘要

Enhancing the activity of the cathode and reducing the voltage for electrochemical hydrodechlorination of chlorohydrocarbon were always the challenges in the area of electrochemical remediation. In this study, a novel cathode material of Ni-doped graphene generated by Ni nanoparticles dispersed evenly on graphene was prepared to electrochemically dechlorinate PCE in groundwater. The reduction potential of Ni-doped graphene for PCE electrochemical hydrodechlorination was -0.24 V (vs. Ag/AgCl) determined by cyclic voltammetry. A single MFC with a voltage of 0.389-0.460 V and a current of 0.221-0.257 mA could drive electrochemical hydrodechlorination of PCE effectively with Ni-doped graphene as the cathode catalyst, and the removal rate of PCE was significantly higher than that with single Ni or graphene as the cathode catalyst. Moreover, neutral conditions were more suitable for Ni-doped graphene to electrochemically hydrodechlorinate PCE in groundwater and no byproduct was accumulated.
机译：增强阴极的活性并降低氯化物的电化学水解的电压始终是电化学修复面积的挑战。 在该研究中，制备由均匀地分散在石墨烯上的Ni纳米颗粒产生的Ni掺杂石墨烯的新型阴极材料以在地下水中电化学脱氯酸盐。 通过循环伏安法测定的PCE电化学水解的Ni掺杂石墨烯的降低电位为-0.24V（Vs.Ag / AgCl）。 电压为0.389-0.460V的单个MFC和0.221-0.257 mA的电流可以有效地用Ni掺杂的石墨烯作为阴极催化剂来驱动PCE的电化学水解，并且PCE的去除率显着高于单个Ni 或石墨烯作为阴极催化剂。 此外，中性条件更适合于Ni掺杂的石墨烯，以在地下水中电化学加工PCE，并且没有累积副产物。

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  • 来源
    《RSC Advances》 |2018年第63期|共8页
  • 作者

    Liu Lu; Sun Xiaochen; Li Wenxin; An Yonglei; Li Hongdong;

  • 作者单位

    Jilin Univ State Key Lab Superhard Mat Changchun 130012 Jilin Peoples R China;

    Jilin Univ State Key Lab Superhard Mat Changchun 130012 Jilin Peoples R China;

    Jilin Univ Minist Educ Key Lab Groundwater Resources &

    Environm Changchun 130021 Jilin Peoples R China;

    Jilin Univ Minist Educ Key Lab Groundwater Resources &

    Environm Changchun 130021 Jilin Peoples R China;

    Jilin Univ State Key Lab Superhard Mat Changchun 130012 Jilin Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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