Nanomaterials for facilitating microbial extracellular electron transfer: Recent progress and challenges

Zhang, Peng; Liu, Jia; Qu, Youpeng; Li, Da; He, Weihua; Feng, Yujie

doi:10.1016/j.bioelechem.2018.05.005

Cited by 84 publications

(27 citation statements)

References 111 publications

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“…The mediators can exhibit higher cytocompatibility and can be also used with microbes with OMC, leading to significant improvements of the output of MFC. [38][39][40] In this Review, we summarize recent progress on polymeric electron mediators for electrochemical regulation of microbial metabolism. In Section 2, the polymeric electron mediators reported so far will be overviewed, showing that they can be classified into two different types (Types I and II).…”

Section: Introductionmentioning

confidence: 99%

Redox‐Active Polymers Connecting Living Microbial Cells to an Extracellular Electrical Circuit

Kaneko

Ishihara

Nakanishi

2020

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Microbial electrochemical systems in which metabolic electrons in living microbes have been extracted to or injected from an extracellular electrical circuit have attracted considerable attention as environmentally‐friendly energy conversion systems. Since general microbes cannot exchange electrons with extracellular solids, electron mediators are needed to connect living cells to an extracellular electrode. Although hydrophobic small molecules that can penetrate cell membranes are commonly used as electron mediators, they cannot be dissolved at high concentrations in aqueous media. The use of hydrophobic mediators in combination with small hydrophilic redox molecules can substantially increase the efficiency of the extracellular electron transfer process, but this method has side effects, in some cases, such as cytotoxicity and environmental pollution. In this Review, recently‐developed redox‐active polymers are highlighted as a new type of electron mediator that has less cytotoxicity than many conventional electron mediators. Owing to the design flexibility of polymer structures, important parameters that affect electron transport properties, such as redox potential, the balance of hydrophobicity and hydrophilicity, and electron conductivity, can be systematically regulated.

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Section: Introductionmentioning

confidence: 99%

Redox‐Active Polymers Connecting Living Microbial Cells to an Extracellular Electrical Circuit

Kaneko

Ishihara

Nakanishi

2020

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“…Supplementation of CdS NPs into biosystems also provides abundant contact sites for interactions with microorganisms and electron acceptors due to their large specific surface area (Chen et al, 2013;Li et al, 2008;Zhang et al, 2018b). In general, CdS NPs have large specific surface area with an abundance of surface active sites to facilitate adsorption of reactant molecules, mass transfer and efficient charge transfer.…”

Section: Electrical Conductivity and Specific Surface Area Of Cds Npsmentioning

confidence: 99%

“…The low electron transfer resistance at CdS NPs-microbe attachment interfaces facilitates a faster transfer of electrons from microorganisms to electron acceptors. This is especially important when isolated areas exist where electrons are not easily shuttled due to physical disruptions in the conductive network (Zhang et al, 2018b). In this case, semiconducting CdS NPs provide a bridge where hopping electron transfers are enhanced by conductive interfaces between microbes and CdS NPs (Xie et al, 2014).…”

Section: Electrical Conductivity and Specific Surface Area Of Cds Npsmentioning

confidence: 99%

Cadmium sulfide nanoparticles-assisted intimate coupling of microbial and photoelectrochemical processes: Mechanisms and environmental applications

Dong

Wang

Yan

et al. 2020

Science of The Total Environment

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“…[ 80,81 ] These sensing platforms are generally developed by combining the enzymes capable of sensing the target molecules and nanomaterials which could increase the conductivity for effective electrochemical investigation and possess the biocompatibility for retaining the activity of those enzymes. [ 56,82 ]…”

Section: Electrochemical‐based Bioelectronic Sensing Platforms Comprimentioning

confidence: 99%

Nanobiohybrid Material‐Based Bioelectronic Devices

Yoon

Shin

Lim

et al. 2020

Biotechnology Journal

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Biomolecules, especially proteins and nucleic acids, have been widely studied to develop biochips for various applications in scientific fields ranging from bioelectronics to stem cell research. However, restrictions exist due to the inherent characteristics of biomolecules, such as instability and the constraint of granting the functionality to the biochip. Introduction of functional nanomaterials, recently being researched and developed, to biomolecules have been widely researched to develop the nanobiohybrid materials because such materials have the potential to enhance and extend the function of biomolecules on a biochip. The potential for applying nanobiohybrid materials is especially high in the field of bioelectronics. Research in bioelectronics is aimed at realizing electronic functions using the inherent properties of biomolecules. To achieve this, various biomolecules possessing unique properties have been combined with novel nanomaterials to develop bioelectronic devices such as highly sensitive electrochemical-based bioelectronic sensing platforms, logic gates, and biocomputing systems. In this review, recently reported bioelectronic devices based on nanobiohybrid materials are discussed. The authors believe that this review will suggest innovative and creative directions to develop the next generation of multifunctional bioelectronic devices.

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Nanomaterials for facilitating microbial extracellular electron transfer: Recent progress and challenges

Cited by 84 publications

References 111 publications

Redox‐Active Polymers Connecting Living Microbial Cells to an Extracellular Electrical Circuit

Redox‐Active Polymers Connecting Living Microbial Cells to an Extracellular Electrical Circuit

Cadmium sulfide nanoparticles-assisted intimate coupling of microbial and photoelectrochemical processes: Mechanisms and environmental applications

Nanobiohybrid Material‐Based Bioelectronic Devices

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