High performance microbial 3-D bionanocomposite as a bioanode for a mediated biosensor device

A novel bionanocomposite prepared by a direct mixing of bacterial cells of Gluconobacter oxydans and carbon nanotubes (CNTs) was applied for preparation of a mediated microbial bioanode for ethanol (EtOH) oxidation. The sensitivity of (162±3)μAmM−1cm−2 achieved is the highest among microbial based biosensor devices for EtOH oxidation published to date. Further, high performance of the oxidation process can be underlined by a short response time and a maximal current density of (261±4)μAcm−2.