Article

Manganese-doped ZnO nanoparticles were synthesized using Crocus sativus extract for use as cathode catalysts in Microbial Fuel Cells (MFCs). Characterization techniques, including XRD and UV-Vis spectroscopy, confirmed the successful doping and structural properties.

Photocatalytic dye degradation tests demonstrated 96.10% efficiency for crystal violet with 6% Mn-doped ZnO. The MFC performance analysis, utilizing polarization studies and Electrochemical Impedance Spectroscopy, indicated a maximum volumetric power density of 12.51 W/m3 with a catalyst loading of 2 mg/cm2. The performance of Mn-doped ZnO was comparable to platinum, establishing its potential as an efficient and sustainable catalyst for MFCs.