TiO2/CdS Composite Photocathode Improves the Performance and Degradation of Wastewater in Microbial Fuel Cells
Analytical science advances(2022)
Abstract
Optimization of dye decolourization for wastewater and power production are explored in dual-chamber microbial fuel cells (MFCs) with TiO2/CdS photocathodes. The rapid reduction of azo dye methylene blue (MB) and power production were enhanced with TiO2/CdS photocathode under illumination. The analysis of electrochemical impedance spectra indicated that the photocatalysis of TiO2/CdS accelerated the electron transfer process of photoelectrode reduction. Moreover, the UV-visible light spectrophotometer showed that the maximum degradation of the MFCs was 98.25%, which illustrated that MB may be cleaved by photoelectrons generated by light irradiation on the illuminated TiO2/CdS photocathode. Finally, the power production of MFCs in this work promoted reductive decolourization of the dye MB solution.
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Key words
bio-electrochemical,photoelectrode,photoreduction,TiO2,CdS
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