Photosynthetic cathodes for Microbial Fuel Cells
Photosynthetic cathodes for Microbial Fuel Cells
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DOI：
10.1016/j.ijhydene.2013.02.111
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发表时间：
2013-08
影响因子：
7.2
通讯作者：
I. Gajda;J. Greenman;C. Melhuish;I. Ieropoulos
中科院分区：
文献类型：
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作者：
I. Gajda;J. Greenman;C. Melhuish;I. Ieropoulos
在微生物燃料电池的实际实施中的主要限制因素之一是寻找用于阴极半反应的有效且可持续的催化剂，以试图避免昂贵和/或有毒的催化剂。使用光养生物是一个很好的选择，因为它们可以作为有效的原位充氧器，从而促进阴极反应。在本研究中，光合生物的氧气生产被证明是光依赖性的，这导致发电量增加了42%。此外，这项研究表明，以前的非生物阴极变成了生物阴极，显示出清晰的光响应，性能提高了48%。使用光合生物催化剂可以避免水基阴极中的氧耗尽，从而为MFC提供可持续的操作。
One of the major limiting factors in the practical implementation of Microbial Fuel Cells is finding efficient and sustainable catalysts for the cathode half reaction, in an attempt to avoid expensive and/or toxic catalysts. The use of phototrophic organisms is one good option since they can act as efficient in-situ oxygenators thus facilitating the cathodic reaction. In the present study, the oxygen production by photosynthetic organisms was shown to be light dependant, which resulted in increasing the power generation by 42%. Furthermore, this study showed that a previously abiotic cathode that turned biotic showed a clear light response with an improved performance of 48%. Oxygen depletion in a water-based cathode can be avoided with the use of photosynthetic biocatalysts, thus providing sustainable operation for MFCs.