Magnetic Cathode Stimulates Extracellular Electron Transfer in Bioelectrochemical Systems

Huihui Zhou; Dawei Zhang; Yifeng Zhang; Yang Yang; Bingfeng Liu; Nanqi Ren; Defeng Xing

doi:10.1021/acssuschemeng.9b03461

Magnetic Cathode Stimulates Extracellular Electron Transfer in Bioelectrochemical Systems

Huihui Zhou
, Dawei Zhang
, Yifeng Zhang^*
, Yang Yang
, Bingfeng Liu
, Nanqi Ren
, Defeng Xing

^*Corresponding author for this work

School of Environment, Harbin Institute of Technology
Northeast Forestry University
Technical University of Denmark

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Exploring alternative cathodic catalysts capable of highly catalytic activity is crucial to the expansion of bioelectrochemical systems. Herein, Fe₃O₄@N-mC is developed as a magnetic cathode catalyst for bioelectroreduction of oxygen. The Fe₃O₄@N-mC exhibits better electrocatalytic activity, selectivity (four-electron transfer pathway), and long-term electrochemical stability in neutral solutions compared to commercial Pt/C catalysts. The microbial fuel cell using Fe₃O₄@N-mC generates a power density of 1141 mW m^-2, which is higher than that of using Pt/C (1022 mW m^-2). Furthermore, the decline of power density is much lower in reactors with Fe₃O₄@N-mC (4%) than those with Pt/C (8%). With Fe₃O₄@N-mC, the cell also obtains higher Coulombic efficiency (26%) than that with Pt/C (21.7%). The outstanding electrocatalytic activity and stability of the Fe₃O₄@N-mC show its great potential to be a favorable substitute to Pt/C catalysts in microbial electrochemical energy devices.

Original language	English
Pages (from-to)	15012-15018
Number of pages	7
Journal	ACS Sustainable Chemistry and Engineering
Volume	7
Issue number	17
DOIs	https://doi.org/10.1021/acssuschemeng.9b03461
State	Published - 3 Sep 2019
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

bioelectrochemical systems
encapsulated FeO nanoparticles
extracellular electron transfer
magnetic cathode
oxygen reduction reaction

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10.1021/acssuschemeng.9b03461

Cite this

@article{0cadc771c5bf4f11aa209891bddc7924,

title = "Magnetic Cathode Stimulates Extracellular Electron Transfer in Bioelectrochemical Systems",

abstract = "Exploring alternative cathodic catalysts capable of highly catalytic activity is crucial to the expansion of bioelectrochemical systems. Herein, Fe3O4@N-mC is developed as a magnetic cathode catalyst for bioelectroreduction of oxygen. The Fe3O4@N-mC exhibits better electrocatalytic activity, selectivity (four-electron transfer pathway), and long-term electrochemical stability in neutral solutions compared to commercial Pt/C catalysts. The microbial fuel cell using Fe3O4@N-mC generates a power density of 1141 mW m-2, which is higher than that of using Pt/C (1022 mW m-2). Furthermore, the decline of power density is much lower in reactors with Fe3O4@N-mC (4\%) than those with Pt/C (8\%). With Fe3O4@N-mC, the cell also obtains higher Coulombic efficiency (26\%) than that with Pt/C (21.7\%). The outstanding electrocatalytic activity and stability of the Fe3O4@N-mC show its great potential to be a favorable substitute to Pt/C catalysts in microbial electrochemical energy devices.",

keywords = "bioelectrochemical systems, encapsulated FeO nanoparticles, extracellular electron transfer, magnetic cathode, oxygen reduction reaction",

author = "Huihui Zhou and Dawei Zhang and Yifeng Zhang and Yang Yang and Bingfeng Liu and Nanqi Ren and Defeng Xing",

note = "Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

year = "2019",

month = sep,

day = "3",

doi = "10.1021/acssuschemeng.9b03461",

language = "英语",

volume = "7",

pages = "15012--15018",

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TY - JOUR

T1 - Magnetic Cathode Stimulates Extracellular Electron Transfer in Bioelectrochemical Systems

AU - Zhou, Huihui

AU - Zhang, Dawei

AU - Zhang, Yifeng

AU - Yang, Yang

AU - Liu, Bingfeng

AU - Ren, Nanqi

AU - Xing, Defeng

PY - 2019/9/3

Y1 - 2019/9/3

N2 - Exploring alternative cathodic catalysts capable of highly catalytic activity is crucial to the expansion of bioelectrochemical systems. Herein, Fe3O4@N-mC is developed as a magnetic cathode catalyst for bioelectroreduction of oxygen. The Fe3O4@N-mC exhibits better electrocatalytic activity, selectivity (four-electron transfer pathway), and long-term electrochemical stability in neutral solutions compared to commercial Pt/C catalysts. The microbial fuel cell using Fe3O4@N-mC generates a power density of 1141 mW m-2, which is higher than that of using Pt/C (1022 mW m-2). Furthermore, the decline of power density is much lower in reactors with Fe3O4@N-mC (4%) than those with Pt/C (8%). With Fe3O4@N-mC, the cell also obtains higher Coulombic efficiency (26%) than that with Pt/C (21.7%). The outstanding electrocatalytic activity and stability of the Fe3O4@N-mC show its great potential to be a favorable substitute to Pt/C catalysts in microbial electrochemical energy devices.

AB - Exploring alternative cathodic catalysts capable of highly catalytic activity is crucial to the expansion of bioelectrochemical systems. Herein, Fe3O4@N-mC is developed as a magnetic cathode catalyst for bioelectroreduction of oxygen. The Fe3O4@N-mC exhibits better electrocatalytic activity, selectivity (four-electron transfer pathway), and long-term electrochemical stability in neutral solutions compared to commercial Pt/C catalysts. The microbial fuel cell using Fe3O4@N-mC generates a power density of 1141 mW m-2, which is higher than that of using Pt/C (1022 mW m-2). Furthermore, the decline of power density is much lower in reactors with Fe3O4@N-mC (4%) than those with Pt/C (8%). With Fe3O4@N-mC, the cell also obtains higher Coulombic efficiency (26%) than that with Pt/C (21.7%). The outstanding electrocatalytic activity and stability of the Fe3O4@N-mC show its great potential to be a favorable substitute to Pt/C catalysts in microbial electrochemical energy devices.

KW - bioelectrochemical systems

KW - encapsulated FeO nanoparticles

KW - extracellular electron transfer

KW - magnetic cathode

KW - oxygen reduction reaction

UR - https://www.scopus.com/pages/publications/85071640534

U2 - 10.1021/acssuschemeng.9b03461

DO - 10.1021/acssuschemeng.9b03461

M3 - 文章

AN - SCOPUS:85071640534

SN - 2168-0485

VL - 7

SP - 15012

EP - 15018

JO - ACS Sustainable Chemistry and Engineering

JF - ACS Sustainable Chemistry and Engineering

IS - 17

ER -

Magnetic Cathode Stimulates Extracellular Electron Transfer in Bioelectrochemical Systems

Abstract

UN SDGs

Keywords

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