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Mo2C/N-doped 3D loofah sponge cathode promotes microbial electrosynthesis from carbon dioxide
- Source :
- International Journal of Hydrogen Energy. 46:20325-20337
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Microbial electrosynthesis (MES) is a promising technology through which carbon dioxide is converted into chemicals via bioelectrochemcal reaction. In this study, a natural loofah sponge (LS) was directly converted into a 3D macroporous carbon cathode through carbonization. The LS was codecorated with polydopamine and Mo2C (Mo2C/N-doped LS). Results revealed that the acetate production rate of MES with Mo2C/N-doped LS increased by 2.5 times compared with that of carbon felt. The maximum acetate concentration of 6.08 g L−1 and 64% of coulomb efficiency (CE) were obtained in MES with Mo2C/N-doped LS. Electrochemistry, scanning electron microscopy, and microbial community analyses showed that Mo2C/N-doped LS contributed to biofilm formation and improved the enrichment of electrochemically active bacteria. Thus, this study introduced a promising method for the fabrication of 3D cathodes with a high electrocatalytic activity from low-cost sustainable natural materials to improve MES efficiency.
- Subjects :
- Renewable Energy, Sustainability and the Environment
Carbonization
Scanning electron microscope
Doping
Biofilm
Microbial electrosynthesis
Energy Engineering and Power Technology
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Electrochemistry
01 natural sciences
Cathode
0104 chemical sciences
law.invention
chemistry.chemical_compound
Fuel Technology
chemistry
law
Carbon dioxide
0210 nano-technology
Nuclear chemistry
Subjects
Details
- ISSN :
- 03603199
- Volume :
- 46
- Database :
- OpenAIRE
- Journal :
- International Journal of Hydrogen Energy
- Accession number :
- edsair.doi...........bf04eb4dff6e1d233398808233bb039e