sainteknol.v22i1.7752 - CrVI Removal Using A Dual Chamber Microbial Fuel Cell
Representative MFC — matched on the paper’s system type only, not its reactor or geometry.
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Abstract
Carbon felt was used as the anode and WO 3 /MoS 2 /FTO (fluorine-doped tin oxide) was used as the photocathode in a photocatalytic microbial fuel cell (PMFC). The photoelectric performance of the WO 3 /MoS 2 /FTO photocathode and the removal efficiency of methylene blue (MB) and Cr(VI) mixed pollutants were systematically investigated in the cathode chamber. The results showed that after 12 h of light irradiation in the PMFC with WO 3 /MoS 2 /FTO as the photocathode, the removal rates of MB and Cr(VI) were 84.56 and 68.11 %, respectively, which were much higher than those using WO 3 /FTO as a photocathode (55.57 % and 45.26 %, respectively). The corresponding maximum output power was 33.14 mW/m 2 , which was 1.85 times that of the WO 3 /FTO photocathode PMFC. These results can be attributed to the fact that WO 3 is an n-type semiconductor and MoS 2 is a p-type semiconductor. Analysis of trapping experiments showed that the composite of WO 3 and MoS 2 formed a Z-scheme heterojunction, which improved the separation efficiency of the photoelectric carriers and enhanced the pollutant removal efficiency of the photocathode. PMFCs are a new and environment-friendly technology for removing pollutants thereby providing an experimental basis for future engineering applications.
Identifiers
- PubMed
- 38644858
- Journal
- Unknown journal