Journal
BIOSENSORS & BIOELECTRONICS
Volume 145, Issue -, Pages -Publisher
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2019.111727
Keywords
Molybdenum dioxide; Cobalt-modifying; Nitrogen-doping; Carbon nanorods; Anode electrocatalyst; Microbial fuel cell
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Funding
- National Natural Science Foundation of China [51471073]
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Cobalt-modified molybdenum dioxide nanoparticles highly dispersed on nitrogen-doped carbon nanorods (Co-MoO2/NCND), are synthesized from anilinium trimolybdate dihydrate nanorods, for the performance improvement of microbial fuel cell based on a mixed bacterial culture. Electrochemical measurements demonstrate that the as-synthesized Co-MoO2/NCND exhibits excellent electrocatalytic activity for the charge transfer on anode, providing the cell with a maximum power density of 2.06 +/- 0.05 W m(-2), which is strikingly higher than the bare carbon felt anode (0.49 +/- 0.04 W m(-2)). The excellent performance of Co-MoO2/NCND is ascribed to the increased electronic conductivity of carbon nanorods by N-doping, the high ability of MoO2 to enrich electroactive bacteria, as demonstrated by high-throughput sequencing, and the enhanced activity of MoO2 by Co-modifying toward redox reactions in electroactive bacteria. This report provides a new concept of anode electrocatalyst fabrications for the application of microbial fuel cells in electricity generation and wastewater treatment.
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