Mn-Doped ZnO Nanoparticles Enhance ORR and Photocatalytic Performance in Microbial Fuel Cells
This study synthesized manganese-doped ZnO nanoparticles using Crocus sativus extract to enhance oxygen reduction reaction and photocatalytic dye degradation in Microbial Fuel Cells. Characterization confirmed successful doping and structural integrity. Photocatalytic tests achieved 96.10% dye degradation, while MFC performance revealed a maximum power density of 12.51 W/m3 with 2 mg/cm2 of Mn-doped ZnO, presenting a cost-effective alternative to platinum catalysts.
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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.
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