Enhanced cathode performance of Fe2O3, boron nitride-doped rGO nanosheets for microbial fuel cell applications

摘要: Iron(III) oxide (Fe2O3) and boron nitride (BN)-doped reduced graphene (rGO) nanosheets were prepared successfully using a surfactant-free hydrothermal method. Through this method, one-dimensional Fe2O3 nanorods incorporated into rGO nanosheets. The hybrid nanocomposite (rGO–BN–Fe2O3) was analyzed by X-ray diffraction, field emission scanning electron microscopy, high-resolution transmission microscopy (HR-TEM) with selected area photoelectron spectroscopy. HR-TEM revealed the to have mean size of 20–30 nm uniform distribution distributed over In study, performance graphene-based nanocomposites, rGO–BN–Fe2O3, assessed novel cathode catalysts in single-chamber-air-cathode microbial fuel cell (MFC). MFCs different catalyst loadings (single layer (SL), double (DL), triple (TL)) fabricated. electrochemical cyclic voltammetry impedance analysis. rGO–BN–Fe2O3 showed higher maximum power densities (81%) than those rGO–BN rGO–Fe2O3 composites. containing DL loading high generation 1673 ± 11 mW m−2 an OCP 663 4 mV compared that generated other MFC-SL MFC-TL loadings, respectively. double-loaded produced 81% predicted density for Pt/C MFCs, 2066 15 m−2. Therefore, considerable increases highlight potential as material MFC applications. loaded cathode, is promising, less expensive green constant prolonged operation platinum on carbon (Pt/C) electrode.