title: Hybrid bio-organic interfaces with matchable nanoscale topography for durable high extracellular electron transfer activity.
abstract: Here, we developed a novel hybrid bio-organic interface with matchable nano-scale topography between a polypyrrole nanowire array (PPy-NA) and the bacterium Shewanella, which enabled a remarkably increased extracellular electron transfer (EET) current from genus Shewanella over a rather long period. PPy-NA thus exhibited outstanding performance in mediating bacterial EET, which was superior to normal electrodes such as carbon plates, Au and tin-doped In₂O₃. It was proposed that the combined effect of the inherent electrochemical nature of PPy and the porous structured bacterial network that was generated on the PPy-NA enabled long-term stability, while the high efficiency was attributed to the enhanced electron transfer rate between PPy-NA and microbes caused by the enhanced local topological interactions.
authors.affiliation: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China. liuh@buaa.edu.cn zhuying@buaa.edu.cn.
authors.forename: Chunmei
authors.initials: C
authors.lastname: Ding
authors.forename: Huan
authors.initials: H
authors.lastname: Liu
authors.forename: Meiling
authors.initials: M
authors.lastname: Lv
authors.forename: Tianyi
authors.initials: T
authors.lastname: Zhao
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhu
authors.forename: Lei
authors.initials: L
authors.lastname: Jiang
mesh_terms: D055664:Electrochemical Techniques; D004566:Electrodes; D004579:Electron Transport; D004583:Electrons; D006046:Gold / Q000737:chemistry; D007204:Indium / Q000737:chemistry; D053770:Nanowires / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*; D020592:Shewanella / Q000737:chemistry / Q000378:metabolism; D013499:Surface Properties; D014001:Tin / Q000737:chemistry
chemical_list: D011108:Polymers; D011758:Pyrroles; D007204:Indium; C067635:polypyrrole; C047711:indium oxide; D014001:Tin; D006046:Gold