Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
194479 | Electrochimica Acta | 2008 | 6 Pages |
Abstract
Biofilms formed from a pure strain of Desulfovibrio desulfuricans 27774 on stainless steel and graphite polarised surfaces were studied. The polarisation conditions applied were −0.4 V vs. SCE for different times. A cathodic current related with the biofilms growth was observed with a maximum intensity of −270 mA m−2 that remained stable for several days using graphite electrodes. These sulphate reducing bacteria biofilms present electrocatalytic activity towards hydrogen and oxygen reduction reactions. Electrode polarisation has a selective effect on the catalytic activity. The biofilms were also observed by scanning electronic microscopy revealing the formation of homogeneous films on the surfaces.
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Authors
Cristina M. Cordas, L. Tiago Guerra, Catarina Xavier, José J.G. Moura,