Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8961308 | International Journal of Hydrogen Energy | 2018 | 8 Pages |
Abstract
Carbon nanotubes (CNTs) have been widely exploited to improve anodic performance, but information is needed on their long-term stability for improvement. Herein, we prepared a novel CNTs-modified graphite felt (CNTs-GF) by a simple and scalable process and evaluated its long-term performance using anaerobic sludge as inoculum. the MFC with CNTs-GF yielded a sustained enhancement of power output, increasing from 1.93 ± 0.09 W mâ2 after 1 month to 2.10 ± 0.05 W mâ2 after 3 months and reaching 2.00 ± 0.10 W mâ2 after 13 month, indicating the enhancement in electricity generation by the CNTs was not declined over one year. However, the bare GF showed a declining tendency of performance during 13 months. The long-term enhancement can be explained by the facts that the CNTs-GF was beneficial to electrochemically active biofilms (EABs) growth and interacted better with EABs and increased the extracellular electron transfer. Community analysis showed an increase in Geobacter in response to CNTs modification. These results demonstrated that CNTs modification could sustain a superior long-term enhancement in MFC performance.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Yaping Zhang, Xi Chen, Yong Yuan, Xingwen Lu, Zuoyi Yang, Yujie Wang, Jian Sun,