期刊
CHEMSUSCHEM
卷 11, 期 23, 页码 4071-4076出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201801808
关键词
bioelectrochemistry; electrodes; energy harvesting; microbial fuel cells; MXene
资金
- Major Program of Higher Education of Guangdong [2017KZDXM029]
- National Natural Science Foundation of China [51678162]
- Guangzhou City Science-Technology Project [201707010250]
- Guangdong Natural Science Funds for Distinguished Young Scholar [2014A030306033]
- Guangdong Academy of Sciences Funds for Innovation Driven Development [2017GDASCX-0409]
Temperature is an important parameter for the performance of bioelectrochemical systems (BESs). Energy-intensive bulk water heating has been usually employed to maintain a desired temperature for the BESs. This study concerns a proof-of-concept of a light-to-heat photothermal electrode for solar heating of a local electroactive biofilm in a BES for efficient microbial energy harvesting at low temperatures as a replacement for bulk water heating approaches. The photothermal electrode was prepared by coating Ti3C2Tx MXene sunlight absorber onto carbon felt. The as-prepared photothermal electrode could efficiently raise the local temperature of the bioelectrode to approximately 30 degrees C from low bulk water temperatures (i.e., 10, 15, and 20 degrees C) under simulated sunlight illumination. As a result, highly efficient microbial energy could be harvested from the low-temperature BES equipped with a photothermal electrode without bulk water heating. This study represents a new avenue for the design and fabrication of electrodes for temperature-sensitive electrochemical and biological systems.
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