期刊
ROYAL SOCIETY OPEN SCIENCE
卷 4, 期 10, 页码 -出版社
ROYAL SOC
DOI: 10.1098/rsos.170798
关键词
microbial fuel cell; Cr(VI) removal; carbon nanotube; reticulated vitreous carbon; electrophoretic deposition
资金
- National Science Fund of China [21390201]
- Major projects of natural science research in Jiangsu Province [15KJA530002]
- State Key Laboratory of Materials-Oriented Chemical Engineering [ZK201605, KL15-07]
- CAS Key Laboratory of Bio-based Materials [KLBM2016009]
- Priority Academic Program from Development of Jiangsu Higher Education Institutions
For Cr(VI)-removal microbial fuel cell (MFC), a more efficient biocathode in MFCs is required to improve the Cr(VI) removal and electricity generation. RVC-CNT electrode was prepared through the electrophoretic deposition of carbon nanotube (CNT) on reticulated vitreous carbon (RVC). The power density of MFC with an RVC-CNT electrode increased to 132.1 +/- 2.8 m Wm(-2), and 80.9% removal of Cr(VI) was achieved within 48 h; compared to only 44.5% removal of Cr(VI) in unmodified RVC. Cyclic voltammetry, energydispersive spectrometry and X-ray photoelectron spectrometry showed that the RVC-CNT electrode enhanced the electrical conductivity and the electron transfer rate; and provided more reaction sites for Cr(VI) reduction. This approach provides process simplicity and a thickness control method for fabricating three-dimensional biocathodes to improve the performance of MFCs for Cr(VI) removal.
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