Electricity Generation by Geobacter sulfurreducens Attached to Gold Electrodes
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- 作者：Hanno Richter ; Kevin McCarthy ; Kelly P. Nevin ; Jessica P. Johnson ; Vincent M. Rotello ; Derek R. Lovley
- 刊名：Langmuir
- 出版年：2008
- 出版时间：April 15, 2008
- 年：2008
- 卷：24
- 期：8
- 页码：4376 - 4379
- 全文大小：428K
- 年卷期：v.24,no.8(April 15, 2008)
- ISSN：1520-5827
文摘
The versatility of gold for electrode manufacture suggests that it could be an ideal material for some microbial fuelcell applications. However, previous studies have suggested that microorganisms that readily transfer electrons tographite do not transfer electrons to gold. Investigations with Geobacter sulfurreducens demonstrated that it couldgrow on gold anodes producing current nearly as effectively as with graphite anodes. Current production was associatedwith the development of G. sulfurreducens biofilms up to 40 
m thick. No current was produced if pilA, the genefor the structural protein of the conductive pili of G. sulfurreducens, was deleted. The finding that gold is a suitableanode material for microbial fuel cells offers expanded possibilities for the construction of microbial fuel cells andthe electrochemical analysis of microbe-electrode interactions.
m thick. No current was produced if pilA, the genefor the structural protein of the conductive pili of G. sulfurreducens, was deleted. The finding that gold is a suitableanode material for microbial fuel cells offers expanded possibilities for the construction of microbial fuel cells andthe electrochemical analysis of microbe-electrode interactions.