Graphitic carbon nitride/carbon brush composite as a novel anode for yeast-based microbial fuel cells

A biocompatible graphitic carbon nitride (g-C3N4) was prepared on the surface of brush fiber (CB) via a facile one-step preparation method. The g-C3N4 formed composite with brush’s fibers (g-C3N4@CB), as shown from XRD analysis. g-C3N4@CB used an anode in yeast-based microbial fuel cell (MFC), and demonstrated outstanding performance compared to plain CB. An potential ?0.27 V “vs. Ag/AgCl” open-circuit voltage 0.77 obtained case electrode, ?0.1 vs. Ag/AgCl 0.62 V, respectively, using electrode maximum power 772 mWm?2, which is twelve times that can be credited biocompatibility its roughness, improved yeast biofilm formation decreased ohmic resistance. This first report involving application MFC, it promising results for other types MFCs.