Effects of Co3O4 modified with MoS2 on microbial fuel cells performance
In this study, Co3O4@MoS2 is prepared as anodic catalytic material for microbial fuel cells (MFCs). As the mass fraction of MoS2 is 20%, the best performance of Co3O4@MoS2 composite catalytic material is achieved, and the addition of MoS2 enhances both the electrical conductivity and catalytic perfo...
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Veröffentlicht in: | Journal of environmental management 2024-09, Vol.367, p.121966, Article 121966 |
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Sprache: | eng |
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Zusammenfassung: | In this study, Co3O4@MoS2 is prepared as anodic catalytic material for microbial fuel cells (MFCs). As the mass fraction of MoS2 is 20%, the best performance of Co3O4@MoS2 composite catalytic material is achieved, and the addition of MoS2 enhances both the electrical conductivity and catalytic performance of the composite catalyst. Through the structural characterization of Co3O4@MoS2 composite catalytic material, nanorod-like Co3O4 and lamellar MoS2 interweaved and stacked each other, and the agglomeration of Co3O4 is weakened. Among the four groups of single-chamber MFCs constructed, the Co3O4@MoS2-MFC shows the best power production performance with a maximum stable output voltage of to 539 mV and a maximum power density of up to 2221 mW/m2. Additionally, the ammonia nitrogen removal rate of the MFCs loaded with catalysts is enhanced by about 10% compared with the blank carbon cloth MFC. Overall, the findings suggest that Co3O4@MoS2 composite catalysts can significantly improve the performance of MFCs, making them more effective for both energy production and wastewater treatment.
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•A low-cost way for preparing Co3O4@MoS2 composite catalytic materials.•The Co3O4@MoS2 catalyst with 20% MoS2 loading display the best electrochemical performance.•The loading of MoS2 makes the composites exhibit better micro-morphology and catalytic properties.•The treatment of wastewater by Co3O4@MoS2 anodic MFC shows significant enhancement of power production performance. |
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ISSN: | 0301-4797 1095-8630 1095-8630 |
DOI: | 10.1016/j.jenvman.2024.121966 |