Bacterial community shift and improved performance induced by in situ preparing dual graphene modified bioelectrode in microbial fuel cell
Bacterial community shift and improved performance induced by in situ preparing dual graphene modified bioelectrode in microbial fuel cell
复制标题
原位制备双石墨烯修饰生物电极引起微生物燃料电池中的细菌群落转变和性能改善
DOI：
10.1016/j.biortech.2017.04.044
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发表时间：
2017-08-01
影响因子：
11.4
通讯作者：
Sun, Jian
中科院分区：
文献类型：
--
作者：
Chen, Junfeng;Hu, Yongyou;Sun, Jian
Dual graphene modified bioelectrode (D-GM-BE) was prepared by in situ microbial-induced reduction of graphene oxide (GO) and polarity reversion in microbial fuel cell (MFC). Next Generation Sequencing technology was used to elucidate bacterial community shift in response to improved performance in D-GM-BE MFC. The results indicated an increase in the relative ratio of Proteobacteria, but a decrease of Firmicutes was observed in graphene modified bioanode (GM-BA); increase of Proteobacteria and Firmicutes were observed in graphene modified biocathode (GM-BC). Genus analysis demonstrated that GM-BE was beneficial to enrich electrogens. Typical exoelectrogens were accounted for 13.02% and 8.83% in GM-BA and GM-BC. Morphology showed that both GM-BA and GM-BC formed 3D-like graphene/ biofilm architectures and revealed that the biofilm viability and thickness would decrease to some extent when GM-BE was formed. D-GM-BE MFC obtained the maximum power density by 124.58 +/- 6.32mWm(2), which was 2.34 times over C-BE MFC. (C) 2017 Elsevier Ltd. All rights reserved.
