Magnetically induced enzymatic cascades – advancing towards multi-fuel direct/mediated bioelectrocatalysis

Herkendell, Katharina; Stemmer, Andreas; Tel‐Vered, Ran

doi:10.1039/c8na00346g

Cited by 23 publications

(18 citation statements)

References 54 publications

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“…The results indicate that self-assembly persisted even in the presence of pulp, enabling power generation and demonstrating the potential use of the methodology in complex environments. Evidently, compared to other, non-self-assembled, biofuel cells based on FDH//BOD (or laccase) DET assemblies, − the power output in our case is low, Table S1, Supporting Information. However, when normalizing the power output to the limiting biocatalyst loading, it seems that the price to be paid for the self-assembly and controlled disassembly features becomes insignificant, only about 10%.…”

Section: Resultsmentioning

confidence: 74%

Power Generation by Selective Self-Assembly of Biocatalysts

2019

Self Cite

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Through a careful chemical and bioelectronic design we have created a system that uses selfassembly of enzyme−nanoparticle hybrids to yield bioelectrocatalytic functionality and to enable the harnessing of electrical power from biomass. Here we show that mixed populations of hybrids acting as catalyst carriers for clean energy production can be efficiently stored, self-assembled on functionalized stationary surfaces, and magnetically re-collected to make the binding sites on the surfaces available again. The methodology is based on selective interactions occurring between chemically modified surfaces and ligandfunctionalized hybrids. The design of a system with minimal cross-talk between the particles, outstanding selective binding of the hybrids at the electrode surfaces, and direct anodic and cathodic electron transfer pathways leads to mediator-less bioelectrocatalytic transformations which are implemented in the construction of a fast self-assembling, membrane-less fructose/O 2 biofuel cell.

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Section: Resultsmentioning

confidence: 74%

Power Generation by Selective Self-Assembly of Biocatalysts

2019

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“…Among the ways to increase electron transfer through MET and DET is to use small molecules of the active mediators and develop highly conductive materials with a high active site for enzyme loading, respectively [56]. Herkendell et al [57] created a double layer of carbon electrode in which the mesoporous carbon nanoparticle and carbon-coated magnetic nanoparticle, referring to the first and second layers of carbon electrode, activated both MET and DET, respectively. The carbon-coated magnetic nanoparticle forms the immobilized enzyme through cascade formation, as shown in Figure 4.…”

Section: The Enzyme Support and Substrate In Ebfcmentioning

confidence: 99%

“…Figure 4. Illustration of the magnetic activation of bioelectrocatalytic cascades through channeling of enzyme-modified magnetic nanoparticles onto the surfaces of enzyme-functionalized mesoporous carbon nanoparticles[57]. Copyright 2019 Royal Society of Chemistry.…”

mentioning

confidence: 99%

Mini-Review: Recent Technologies of Electrode and System in the Enzymatic Biofuel Cell (EBFC)

Karim

Yang

2021

Applied Sciences

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Enzymatic biofuel cells (EBFCs) is one of the branches of fuel cells that can provide high potential for various applications. However, EBFC has challenges in improving the performance power output. Exploring electrode materials is one way to increase enzyme utilization and lead to a high conversion rate so that efficient enzyme loading on the electrode surface can function correctly. This paper briefly presents recent technologies developed to improve bio-catalytic properties, biocompatibility, biodegradability, implantability, and mechanical flexibility in EBFCs. Among the combinations of materials that can be studied and are interesting because of their properties, there are various nanoparticles, carbon-based materials, and conductive polymers; all three have the advantages of chemical stability and enhanced electron transfer. The methods to immobilize enzymes, and support and substrate issues are also covered in this paper. In addition, the EBFC system is also explored and developed as suitable for applications such as self-pumping and microfluidic EBFC.

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“…In addition to bacteria, yeast was also reported to produce electricity in BECs, showing that the ability to perform external electron transport may exist in various microorganisms and is not restricted to bacteria [ 19 ]. The utilization of isolated components benefits from a more concentrated active material for electricity generation [ 20 , 21 ]; however, unlike whole cells, they lack repair mechanisms and may be less stable [ 22 ]. Additionally, the cost of the purification process may be a significant economic consideration while trying to elaborate such methods from a basic concept into actual applicative technologies.…”

Section: Introductionmentioning

confidence: 99%

Direct Electricity Production from Nematostella and Arthemia’s Eggs in a Bio-Electrochemical Cell

Shlosberg

Brekhman

Lotan

et al. 2022

IJMS

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In recent years, extensive efforts have been made to develop clean energy technologies to replace fossil fuels to assist the struggle against climate change. One approach is to exploit the ability of bacteria and photosynthetic organisms to conduct external electron transport for electricity production in bio-electrochemical cells. In this work, we first show that the sea anemones Nematostella vectensis and eggs of Artemia (brine shrimp) secrete redox-active molecules that can reduce the electron acceptor Cytochrome C. We applied 2D fluorescence spectroscopy and identified NADH or NADPH as secreted species. Finally, we broaden the scope of living organisms that can be integrated with a bio-electrochemical cell to the sea anemones group, showing for the first time that Nematostella and eggs of Artemia can produce electrical current when integrated into a bio-electrochemical cell.

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Magnetically induced enzymatic cascades – advancing towards multi-fuel direct/mediated bioelectrocatalysis

Abstract: Enzyme-functionalized magnetic nanoparticles are channeled by magnetic field gradients onto modified electrodes to activate enzymatic cascades for multi-substrate power generation.

Cited by 23 publications

References 54 publications

Power Generation by Selective Self-Assembly of Biocatalysts

Power Generation by Selective Self-Assembly of Biocatalysts

Mini-Review: Recent Technologies of Electrode and System in the Enzymatic Biofuel Cell (EBFC)

Direct Electricity Production from Nematostella and Arthemia’s Eggs in a Bio-Electrochemical Cell

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