Biofilm and nanowire production leads to increased current in Geobacter sulfurreducens fuel cells
Biofilm and nanowire production leads to increased current in Geobacter sulfurreducens fuel cells
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DOI：
10.1128/aem.01444-06
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发表时间：
2006-11-01
影响因子：
4.4
通讯作者：
Lovley, Derek R.
中科院分区：
文献类型：
--
作者：
Reguera, Gernma;Nevin, Kelly P.;Lovley, Derek R.
Geophylsulfurreducens在微生物燃料电池的阳极表面上开发了高度结构化的多层生物膜，将乙酸盐转化为电能。离阳极一定距离的细胞保持活力，并且随着生物膜厚度的增加，电流产生效率没有降低。遗传学研究表明，通过生物膜的有效电子转移需要导电皮利的存在。这些皮利可以代表渗透生物膜的电子网络，其可以以能量有效的方式促进远程电转移，使电力生产增加10倍以上。
Geobacter sulfurreducens developed highly structured, multilayer biofilms on the anode surface of a microbial fuel cell converting acetate to electricity. Cells at a distance from the anode remained viable, and there was no decrease in the efficiency of current production as the thickness of the biofilm increased. Genetic studies demonstrated that efficient electron transfer through the biofilm required the presence of electrically conductive pili. These pili may represent an electronic network permeating the biofilm that can promote long-range electrical transfer in an energy-efficient manner, increasing electricity production more than 10-fold.