Modification of Graphite Sheet Anode with Iron (II, III) Oxide-Carbon Dots for Enhancing the Performance of Microbial Fuel Cell

The present study explores the use of carbon dots coated with Iron (II, III) oxide (Fe3O4) for its application as an anode in microbial fuel cells (MFC). Fe3O4@PSA-C was synthesized using a hydrothermal-assisted probe sonication method. Nanoparticles were characterized XRD, SEM, FTIR, and RAMAN Spectroscopy. Different concentrations Fe3O4- (0.25, 0.5, 0.75, 1 mg/cm2) onto graphite sheets (Fe3O4@PSA-C), their performance MFC evaluated. Cyclic voltammetry (CV) (1 modified indicated oxidation peaks at ?0.26 mV +0.16 mV, respectively, peak currents 7.7 mA 8.1 mA. fluxes these anodes much higher than those other low-concentration bare sheet anode. maximum power density (Pmax) observed mg/cm2 concentration 440.01 mW/m2, 1.54 times MFCs (285.01 mW/m2). elevated interaction area permits pervasive Fe3O4 crystallization providing enhanced cell attachment capability anode, boosting biocompatibility Fe3O4@PSA-C. This significantly improved MFC, making good choice MFC.