Enhancement of power production with tartaric acid doped polyaniline nanowire network modified anode in microbial fuel cells

Liao, Zhi-Hong; Sun, Jianzhong; Sun, De-Zhen; Si, Rong-Wei; Yong, Yang‐Chun

doi:10.1016/j.biortech.2015.05.105

Cited by 58 publications

(21 citation statements)

References 18 publications

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“…Inspired by this, a range of strategies has been developed to tailor the electrode surface chemistry for fast thermodynamic and kinetic processes, including conventional surface modification via physical and chemical treatment (Kumar et al, 2013) and creative functionalization with diverse redox molecules, conducting polymers, metals and metallic compounds, etc. (Tang et al, 2014; Liao et al, 2015; Zhao et al, 2015; Xu and Quan, 2016; Zou et al, 2017a,b). Taking into consideration the hypothetic EET pathways that refer to direct electron transfer via microbial membrane-bound cytochromes and/or nanowires (i.e., DET) and indirect electron transfer mediated by redox-active small molecules acting as electron mediators (i.e., MET) (Shi et al, 2016; Kumar et al, 2017), the functionalization of an electrode with proper electron mediators could be a powerful approach to improve interface electrochemical activity for microbial electrocatalysis.…”

Section: Introductionmentioning

confidence: 99%

Promoting Shewanella Bidirectional Extracellular Electron Transfer for Bioelectrocatalysis by Electropolymerized Riboflavin Interface on Carbon Electrode

Zou

Huang

et al. 2019

Front. Microbiol.

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The extracellular electron transfer (EET) that connects the intracellular metabolism of electroactive microorganisms to external electron donors/acceptors, is the foundation to develop diverse microbial electrochemical technologies. For a particular microbial electrochemical device, the surface chemical property of an employed electrode material plays a crucial role in the EET process owing to the direct and intimate biotic-abiotic interaction. The functional modification of an electrode surface with redox mediators has been proposed as an effectual approach to promote EET, but the underlying mechanism remains unclear. In this work, we investigated the enhancement of electrochemically polymerized riboflavin interface on the bidirectional EET of Shewanella putrefaciens CN32 for boosting bioelectrocatalytic ability. An optimal polyriboflavin functionalized carbon cloth electrode achieved about 4.3-fold output power density (∼707 mW/m2) in microbial fuel cells and 3.7-fold cathodic current density (∼0.78 A/m2) for fumarate reduction in three-electrode cells compared to the control, showing great increases in both outward and inward EET rates. Likewise, the improvement was observed for polyriboflavin-functionalized graphene electrodes. Through comparison between wild-type strain and outer-membrane cytochrome (MtrC/UndA) mutant, the significant improvements were suggested to be attributed to the fast interfacial electron exchange between the polyriboflavin interface with flexible electrochemical activity and good biocompatibility and the outer-membrane cytochromes of the Shewanella strain. This work not only provides an effective approach to boost microbial electrocatalysis for energy conversion, but also offers a new demonstration of broadening the applications of riboflavin-functionalized interface since the widespread contribution of riboflavin in various microbial EET pathways together with the facile electropolymerization approach.

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Section: Introductionmentioning

confidence: 99%

Promoting Shewanella Bidirectional Extracellular Electron Transfer for Bioelectrocatalysis by Electropolymerized Riboflavin Interface on Carbon Electrode

Zou

Huang

et al. 2019

Front. Microbiol.

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“…14,15 Then, the cell pellets were resuspended in 150 mL electrolyte to an optical density (OD 600 ) of $2.5 and used as MFC inoculum. 22…”

Section: Bacteria Culturementioning

confidence: 99%

Improving the extracellular electron transfer of Shewanella oneidensis MR-1 for enhanced bioelectricity production from biomass hydrolysate

et al. 2017

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“…However, the hydrophobic surface property of CC compromises its ability for microorganism attachment (poor biocompatibility) and electron transfer (limited electrocatalytic activity). Hence, chemical modification of CC and the development of novel anode have effectively improved the power output of MFCs . Recently, researchers have revealed that CC anode decoration with transition metals or metal oxides promoted power generation in MFCs because of the accelerated extracellular electron transfer to the anode .…”

Section: Introductionmentioning

confidence: 99%

Cauliflower‐like polypyrrole@MnO₂ modified carbon cloth as a capacitive anode for high‐performance microbial fuel cells

Zhao

Tian²,

Guo

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: The morphology and size of MnO 2 that deposited on a carbon clothelectrode have dramatic effects on the electrochemical properties and cycling life. Currently, MnO 2 and its composite structures with zero-dimensional (0D) nanospheres, one-dimension (1D) nanotubes and two-dimension (2D) nanomesh have been successfully synthesized and employed in MFC. Hence, the development of a three-dimensional (3D) flexible, cost-effective and high-performance anode is of great significance for microbial energy harvesting.RESULT: Herein, we have fabricated 3D cauliflower-like polypyrrole@manganese dioxide (PPy@MnO 2 ) composites, which are successfully grown on carbon cloth (CC) anode by electrodeposition to promote the power production and storage in microbial fuel cells (MFCs). Impressively, the as-prepared PPy@MnO 2 modified CC anode delivers a power density of 2139.7 ± 17.5 mW m −2 and produces an areal capacitance of 1120 ± 12.8 mF cm −2 , which is 3.58 and 4.84 folds higher than that with bare CC anode, benefiting from the unique cauliflower-like 3D architecture with increased active centers that host the bacteria for more efficient charge transfer. Electrochemical analyses indicate that the PPy@MnO 2 modified CC electrode has excellent electrochemical activity, capacitive behavior and long-term cyclabilities with smooth surface morphology and high porosity.CONCLUSION: These findings not only provide a facile electrodeposition strategy for PPy@MnO 2 nanoflowers modified CC anode, but also demonstrates its potential for the production and storage of energy simultaneously in MFC application. RESULTS AND DISCUSSION Anode modificationThe surface morphologies of the MnO 2 -CC electrodes with different MnO 2 deposition times from 30 min to 120 min are presented in Fig. 2(a-d). The image of 30 min-MnO 2 -CC electrode J Chem Technol Biotechnol 2020; 95: 163-172

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Enhancement of power production with tartaric acid doped polyaniline nanowire network modified anode in microbial fuel cells

Cited by 58 publications

References 18 publications

Promoting Shewanella Bidirectional Extracellular Electron Transfer for Bioelectrocatalysis by Electropolymerized Riboflavin Interface on Carbon Electrode

Promoting Shewanella Bidirectional Extracellular Electron Transfer for Bioelectrocatalysis by Electropolymerized Riboflavin Interface on Carbon Electrode

Improving the extracellular electron transfer of Shewanella oneidensis MR-1 for enhanced bioelectricity production from biomass hydrolysate

Cauliflower‐like polypyrrole@MnO₂ modified carbon cloth as a capacitive anode for high‐performance microbial fuel cells

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Enhancement of power production with tartaric acid doped polyaniline nanowire network modified anode in microbial fuel cells

Cited by 58 publications

References 18 publications

Promoting Shewanella Bidirectional Extracellular Electron Transfer for Bioelectrocatalysis by Electropolymerized Riboflavin Interface on Carbon Electrode

Promoting Shewanella Bidirectional Extracellular Electron Transfer for Bioelectrocatalysis by Electropolymerized Riboflavin Interface on Carbon Electrode

Improving the extracellular electron transfer of Shewanella oneidensis MR-1 for enhanced bioelectricity production from biomass hydrolysate

Cauliflower‐like polypyrrole@MnO2 modified carbon cloth as a capacitive anode for high‐performance microbial fuel cells

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Cauliflower‐like polypyrrole@MnO₂ modified carbon cloth as a capacitive anode for high‐performance microbial fuel cells