title: Graphene/Fe3O4Nanocomposites as Efficient Anodes to Boost the Lifetime and Current Output of Microbial Fuel Cells.
abstract: The enhancement of microbial activity and electrocatalysis through the design of new anode materials is essential to develop microbial fuel cells (MFCs) with longer lifetimes and higher output. In this research, a novel anode material, graphene/Fe3O4(G/Fe3O4) composite, has been designed for Shewanella-inoculated MFCs. Because the Shewanella species could bind to Fe3O4with high affinity and their growth could be supported by Fe3O4, the bacterial cells attached quickly onto the anode surface and their long-term activity improved. As a result, MFCs with reduced startup time and improved stability were obtained. Additionally, the introduction of graphene not only provided a large surface area for bacterial attachment, but also offered high electrical conductivity to facilitate extracellular electron transfer (EET). The results showed that the current and power densities of a G/Fe3O4anode were much higher than those of each individual component as an anode.
authors.affiliation: State Key Laboratory of Analytical Chemistry for Life and Collaborative Innovation Center of Chemistry for Life Science School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.|School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore, Singapore.
authors.forename: Rong-Bin
authors.initials: RB
authors.lastname: Song
authors.affiliation: Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials, Nanjing University of Posts & Telecommunications, Nanjing, 210023, P. R. China.
authors.forename: Cui-E
authors.initials: CE
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of Analytical Chemistry for Life and Collaborative Innovation Center of Chemistry for Life Science School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.
authors.forename: Pan-Pan
authors.initials: PP
authors.lastname: Gai
authors.affiliation: State Key Laboratory of Analytical Chemistry for Life and Collaborative Innovation Center of Chemistry for Life Science School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.
authors.forename: Dan
authors.initials: D
authors.lastname: Guo
authors.affiliation: State Key Laboratory of Analytical Chemistry for Life and Collaborative Innovation Center of Chemistry for Life Science School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.
authors.forename: Li-Ping
authors.initials: LP
authors.lastname: Jiang
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore, Singapore.|Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Science, Nanyang Technological University, Nanyang Avenue, 639798, Singapore, Singapore.
authors.forename: Qichun
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Analytical Chemistry for Life and Collaborative Innovation Center of Chemistry for Life Science School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.|School of Chemistry and Life Science, Nanjing University Jinling College, Nanjing, 210089, P. R. China.
authors.forename: Jian-Rong
authors.initials: JR
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Analytical Chemistry for Life and Collaborative Innovation Center of Chemistry for Life Science School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.
authors.forename: Jun-Jie
authors.initials: JJ
authors.lastname: Zhu
mesh_terms: D001674:Bioelectric Energy Sources; D055664:Electrochemical Techniques / Q000295:instrumentation*; D004566:Electrodes; D005290:Ferric Compounds / Q000737:chemistry* / Q000378:metabolism; D006108:Graphite / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D053761:Nanocomposites / Q000737:chemistry*; D020592:Shewanella / Q000737:chemistry / Q000378:metabolism; D014961:X-Ray Diffraction
chemical_list: D005290:Ferric Compounds; C000499:ferric oxide; D006108:Graphite
keywords: electron transfer; fuel cells; graphene; microbial activity; nanoparticles