title: Nitrogen doped carbon nanoparticles enhanced extracellular electron transfer for high-performance microbial fuel cells anode.
abstract: 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.
authors.affiliation: School of Chemical & Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore.
authors.forename: Yang-Yang
authors.initials: YY
authors.lastname: Yu
authors.affiliation: School of Chemical & Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore.
authors.forename: Chun Xian
authors.initials: CX
authors.lastname: Guo
authors.affiliation: School of Chemical & Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore.
authors.forename: Yang-Chun
authors.initials: YC
authors.lastname: Yong
authors.affiliation: School of Chemical & Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore.
authors.forename: Chang Ming
authors.initials: CM
authors.lastname: Li
authors.affiliation: 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. Electronic address: songhao@ntu.edu.sg.
authors.forename: Hao
authors.initials: H
authors.lastname: Song
mesh_terms: D001674:Bioelectric Energy Sources; D002244:Carbon / Q000737:chemistry*; D004566:Electrodes; D004579:Electron Transport; D004583:Electrons; D053758:Nanoparticles / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry*; D020592:Shewanella
chemical_list: D002244:Carbon; D009584:Nitrogen
keywords: Anode; Electricity; Microbial fuel cell; Nitrogen-doped carbon nanoparticle; Shewanella