title: FePO4based single chamber air-cathode microbial fuel cell for online monitoring levofloxacin.
abstract: A bio-electrochemical strategy was developed for constructing a simple and sensitive levofloxacin (LEV) sensor based on a single chamber microbial fuel cell (SC-MFC) using FePO4nanoparticles (NPs) as the cathode catalyst instead of traditional Pt/C. In this assembled sensor device, FePO4NPs dramatically promoted the electrooxidation of oxygen on the cathode, which helps to accelerate the voltage output from SC-MFC and can provide a powerful guarantee for LEV detection. Scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) were used to fully characterize the FePO4NPs. Under the optimized COD condition (3mM), the LEV with a concentration range of 0.1-1000µg/L could be detected successfully, and exhibited the excellent linear interval in the concentration range of 0.1-100µg/L. During this range of concentrations of LEV, a temporary effect on the anode of exoelectrogenic bacterial in less than 10min could occur, and then came back to the normal. It exhibited a long-term stability, maintaining the stable electricity production for 14 months of continuous running. Besides, the detection mechanism was investigated by quantum chemical calculation using density functional theory (DFT).
authors.affiliation: State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors.forename: Libin
authors.initials: L
authors.lastname: Zeng
authors.affiliation: State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China; Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia. Electronic address: xyli@dlut.edu.cn.
authors.forename: Xinyong
authors.initials: X
authors.lastname: Li
authors.affiliation: State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors.forename: Yueran
authors.initials: Y
authors.lastname: Shi
authors.affiliation: State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors.forename: Yefei
authors.initials: Y
authors.lastname: Qi
authors.affiliation: State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors.forename: Daqiong
authors.initials: D
authors.lastname: Huang
authors.affiliation: Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
authors.forename: Moses
authors.initials: M
authors.lastname: Tadé
authors.affiliation: Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
authors.forename: Shaobin
authors.initials: S
authors.lastname: Wang
authors.affiliation: Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
authors.forename: Shaomin
authors.initials: S
authors.lastname: Liu
mesh_terms: D000900:Anti-Bacterial Agents / Q000032:analysis*; D001674:Bioelectric Energy Sources / Q000382:microbiology; D015374:Biosensing Techniques / Q000295:instrumentation*; D002384:Catalysis; D055664:Electrochemical Techniques / Q000295:instrumentation; D004566:Electrodes; D005290:Ferric Compounds / Q000737:chemistry*; D064704:Levofloxacin / Q000032:analysis*; D057230:Limit of Detection; D008958:Models, Molecular; D053758:Nanoparticles / Q000737:chemistry*; D062065:Wastewater / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D000900:Anti-Bacterial Agents; D005290:Ferric Compounds; D064704:Levofloxacin; D062065:Wastewater; D014874:Water Pollutants, Chemical; C035885:ferric phosphate
keywords: FePO(4) nanoparticles; HOMO-LUMO; Levofloxacin sensor; Microbial fuel cell