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A solar assisted microbial electrolysis cell for hydrogen production driven by a microbial fuel cell

机译：用于通过微生物燃料电池驱动的氢气产生的太阳能辅助微生物电解槽

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摘要

Here, we report a new microbial electrolysis cell (MEC) system for hydrogen generation that was composed of a microbial fuel cell (MFC) and a bio-photoelectrochemical cell (BPEC). The BPEC consisted of a photocathode and a microbially-catalyzed anode. In the new MEC system, hydrogen was produced by the BPEC photocathode when it was illuminated with visible light, with the voltage for electrolysis supplied by the MFC. The electrons produced from the MFC anode were transferred to the BPEC photocathode through an external circuit and then photogenerated holes captured some of the electrons emitted by the MFC anode under visible light. This prevented the recombination of the photogenerated hole and electron pairs, leaving more photogenerated electrons available for hydrogen evolution reactions. This also allowed the remaining electrons from the MFC anode to participate in hydrogen evolution reactions. Under visible light, hydrogen was continuously produced from the new MEC system, with a maximum current density of 0.68 A m(-2) and an average hydrogen-production rate of 1.35 +/- 0.15 mL h(-1).
机译：在这里，我们报告了一种新的微生物电解细胞（MEC）系统，用于由微生物燃料电池（MFC）和生物光电化细胞（BPEC）组成。 BPEC由光电阴极和微生物催化的阳极组成。在新的MEC系统中，当用可见光照射时，通过BPEC光电阴极产生氢气，其电压由MFC供应的电压。通过外部电路将由MFC阳极产生的电子转移到BPEC光电阴极，然后在可见光下捕获由MFC阳极发射的一些电子的孔。这防止了光生孔和电子对的重组，留下更多的光发生电子可用于氢化反应。这也允许剩余的电子来自MFC阳极参与氢进化反应。在可见光下，从新MEC系统中连续生产氢，最大电流密度为0.68A（-2），平均氢气生产率为1.35 +/- 0.15ml H（-1）。

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  • 来源
    《RSC Advances》 |2015年第100期|共6页
  • 作者

    Wan Li-Li; Li Xiao-Jing; Zang Guo-Long; Wang Xin; Zhang Yue-Yong; Zhou Qi-Xing;

  • 作者单位

    Nankai Univ Tianjin Key Lab Environm Remediat &

    Pollut Contro MOE Key Lab Pollut Proc &

    Environm Coll Environm Sci &

    Engn Tianjin 300071 Peoples R China;

    Nankai Univ Tianjin Key Lab Environm Remediat &

    Pollut Contro MOE Key Lab Pollut Proc &

    Environm Coll Environm Sci &

    Engn Tianjin 300071 Peoples R China;

    Nankai Univ Tianjin Key Lab Environm Remediat &

    Pollut Contro MOE Key Lab Pollut Proc &

    Environm Coll Environm Sci &

    Engn Tianjin 300071 Peoples R China;

    Nankai Univ Tianjin Key Lab Environm Remediat &

    Pollut Contro MOE Key Lab Pollut Proc &

    Environm Coll Environm Sci &

    Engn Tianjin 300071 Peoples R China;

    Nankai Univ Tianjin Key Lab Environm Remediat &

    Pollut Contro MOE Key Lab Pollut Proc &

    Environm Coll Environm Sci &

    Engn Tianjin 300071 Peoples R China;

    Nankai Univ Tianjin Key Lab Environm Remediat &

    Pollut Contro MOE Key Lab Pollut Proc &

    Environm Coll Environm Sci &

    Engn Tianjin 300071 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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