Recent advances in enrichment, isolation, and bio-electrochemical activity evaluation of exoelectrogenic microorganisms

Zhang, Baocai; Shi, Sicheng; Tang, Rui; Qiao, Chunxiao; You, Zixuan; Shao, Shulin; Wu, Dan; Yu, Huan; Zhang, Junqi; Cao, Yingxiu; Li, Feng; Song, Hao

doi:10.1016/j.biotechadv.2023.108175

Cited by 8 publications

(1 citation statement)

References 243 publications

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“…[18] Specifically, the first-step adhesion of microbiomes is mainly driven by electrostatic interactions. [19,20] The electrodes' coordination environments which greatly affect the surface electronegativity and intensity thus are highly related to microbial enrichment. [21,22] On the other hand, though various strategies have been developed to enhance bidirectional electron exchange between materials and microbes, including gene editing, microbial domestication, and electron shuttle addition, [23][24][25] designing and modifying the electrodes' coordination structure is a most straightforward and convenient method to regulate the electron transfer paths at the biotic-abiotic interface for establishing a cost-effective biohybrid.…”

Section: Introductionmentioning

confidence: 99%

Atomic Pyridinic Nitrogen as Highly Active Metal‐Free Coordination Sites at the Biotic‐Abiotic Interface for Bio‐Electrochemical CO₂ Reduction

Xia,

Cheng,

Chen

et al. 2023

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Bio‐electrochemical conversion of anthropogenic CO2 into value‐added products using cost‐effective metal‐free catalysts represents a promising strategy for sustainable fuel production. Herein, N‐doped carbon nanosheets synthesized via pyrolysis of the zeolitic‐imidazolate framework (ZIF) are developed for constructing efficient biohybrids to facilitate CO2‐to‐CH4 conversion. The microbial enrichment and bio‐interfacial charge transfer are significantly affected by the proportion of the co‐existed graphitic‐N, pyridinic‐N, and pyrrolic‐N in the defective carbon nanosheets. It is unfolded that pyridinic‐N and pyrrolic‐N with the doped N atoms near the edge can significantly enhance the adsorption of their adjacent C atoms toward O, leading to improved microbe enrichment. Especially, pyridinic‐N which can provide one p electron to the aromatic π system, greatly enhances the electron‐donating capability of the carbon nanosheets to the microorganisms. Correspondingly, due to its largest amount of pyridinic‐N doping, the N‐doped carbon nanosheets derived from ZIF pyrolysis at 900 °C (denoted 900‐NC) achieve the highest methane production of ≈215.7 mmol m−2 day−1 with a high selectivity (Faradaic efficiency = ≈94.2%) at −0.9 V versus Ag/AgCl. This work demonstrates the effectiveness of N‐doped carbon catalysts for bio‐electrochemical CO2 fixation and contributes to the understanding of N functionalities toward microbiome response and biotic‐abiotic charge transfer in various bio‐electrochemical systems.

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Section: Introductionmentioning

confidence: 99%

Atomic Pyridinic Nitrogen as Highly Active Metal‐Free Coordination Sites at the Biotic‐Abiotic Interface for Bio‐Electrochemical CO₂ Reduction

Xia,

Cheng,

Chen

et al. 2023

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Living Synthelectronics: A New Era for Bioelectronics Powered by Synthetic Biology

Sun,

Yang,

et al. 2024

Advanced Materials

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Bioelectronics, which converges biology and electronics, has attracted great attention due to their vital applications in human–machine interfaces. While traditional bioelectronic devices utilize nonliving organic and/or inorganic materials to achieve flexibility and stretchability, a biological mismatch is often encountered because human tissues are characterized not only by softness and stretchability but also by biodynamic and adaptive properties. Recently, a notable paradigm shift has emerged in bioelectronics, where living cells, and even viruses, modified via gene editing within synthetic biology, are used as core components in a new hybrid electronics paradigm. These devices are defined as “living synthelectronics,” and they offer enhanced potential for interfacing with human tissues at informational and substance exchange levels. In this Perspective, the recent advances in living synthelectronics are summarized. First, opportunities brought to electronics by synthetic biology are briefly introduced. Then, strategic approaches to designing and making electronic devices using living cells/viruses as the building blocks, sensing components, or power sources are reviewed. Finally, the challenges faced by living synthelectronics are raised. It is believed that this paradigm shift will significantly contribute to the real integration of bioelectronics with human tissues.

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An insight on energy production using microbial fuel cell: A microbiological perspective and electron transfer improvement

Palanivel,

Naina Mohamed,

Mohanakrishna

et al. 2024

J of Chemical Tech & Biotech

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Microbial fuel cells (MFCs) are sustainable energy technologies that could resolve pollution challenges brought by various activities. It can meet energy demand by producing bioelectricity through catabolizing organic matter. Over the past two decades, research on many microbes have been used in MFCs, which intrigued researchers to explore the underlying electron transfer mechanism between microbe and anode. Electron transfer between electrode and microorganism occurs via different pathways: direct, indirect electron transfer and interspecies electron transfer. Shewanella and Geobacter are well‐known for microbe–electrode and microbe–microbe electron transfer. This review provides an overview of the significant varieties of microbes utilized in MFCs for simultaneous bioelectricity generation and wastewater treatment. Mechanisms of different modes of electron transfer involved during the oxidation of organic wastes in the anode section of MFCs are highlighted. Furthermore, this review also details some of the techniques to promote extracellular electron transfer efficiency which is important for the enhanced performance of MFC in terms of power, current generation and wastewater remediation. A perspective of challenges to be addressed for the effective functioning of these technologies, opportunities for MFC systems to be scaled up and associated techno‐economic analysis are discussed. © 2024 Society of Chemical Industry (SCI).

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Recent advances in enrichment, isolation, and bio-electrochemical activity evaluation of exoelectrogenic microorganisms

Cited by 8 publications

References 243 publications

Atomic Pyridinic Nitrogen as Highly Active Metal‐Free Coordination Sites at the Biotic‐Abiotic Interface for Bio‐Electrochemical CO₂ Reduction

Atomic Pyridinic Nitrogen as Highly Active Metal‐Free Coordination Sites at the Biotic‐Abiotic Interface for Bio‐Electrochemical CO₂ Reduction

Living Synthelectronics: A New Era for Bioelectronics Powered by Synthetic Biology

An insight on energy production using microbial fuel cell: A microbiological perspective and electron transfer improvement

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Recent advances in enrichment, isolation, and bio-electrochemical activity evaluation of exoelectrogenic microorganisms

Cited by 8 publications

References 243 publications

Atomic Pyridinic Nitrogen as Highly Active Metal‐Free Coordination Sites at the Biotic‐Abiotic Interface for Bio‐Electrochemical CO2 Reduction

Atomic Pyridinic Nitrogen as Highly Active Metal‐Free Coordination Sites at the Biotic‐Abiotic Interface for Bio‐Electrochemical CO2 Reduction

Living Synthelectronics: A New Era for Bioelectronics Powered by Synthetic Biology

An insight on energy production using microbial fuel cell: A microbiological perspective and electron transfer improvement

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Product

Resources

About

Atomic Pyridinic Nitrogen as Highly Active Metal‐Free Coordination Sites at the Biotic‐Abiotic Interface for Bio‐Electrochemical CO₂ Reduction

Atomic Pyridinic Nitrogen as Highly Active Metal‐Free Coordination Sites at the Biotic‐Abiotic Interface for Bio‐Electrochemical CO₂ Reduction