School of Chemical & Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore.
School of Chemical & Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore; Key Laboratory of Systems Bioengineering (Ministry of Education), SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China.
Chemosphere. 2015 Dec;140:26-33. doi: 10.1016/j.chemosphere.2014.09.070. Epub 2014 Oct 29.
Nitrogen doped carbon nanoparticles (NDCN) were applied to modify the carbon cloth anodes of microbial fuel cells (MFCs) inoculated with Shewanella oneidensis MR-1, one of the most well-studied exoelectrogens. Experimental results demonstrated that the use of NDCN increased anodic absorption of flavins (i.e., the soluble electron mediator secreted by S. oneidensis MR-1), facilitating shuttle-mediated extracellular electron transfer. In addition, we also found that NDCN enabled enhanced contact-based direct electron transfer via outer-membrane c-type cytochromes. Taken together, the performance of MFCs with the NDCN-modified anode was enormously enhanced, delivering a maximum power density 3.5 times' higher than that of the MFCs without the modification of carbon cloth anodes.
氮掺杂碳纳米粒子（NDCN）被应用于修饰接种了希瓦氏菌属（Shewanella oneidensis MR-1）的微生物燃料电池（MFC）的碳布阳极，希瓦氏菌属（Shewanella oneidensis MR-1）是研究最广泛的外生菌之一。实验结果表明，使用 NDCN 增加了黄素（即由 S. oneidensis MR-1 分泌的可溶性电子介体）在阳极的吸收，促进了穿梭介导的细胞外电子转移。此外，我们还发现 NDCN 可以通过外膜 c 型细胞色素增强基于接触的直接电子转移。总的来说，具有 NDCN 修饰阳极的 MFC 的性能得到了极大的提高，最大输出功率密度比未修饰碳布阳极的 MFC 提高了 3.5 倍。
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