Biofuel cell for generating power from methanol substrate using alcohol oxidase bioanode and air-breathed laccase biocathode

Das, Madhuri; Barbora, Lepakshi; Das, Priyanki; Goswami, Pranab

doi:10.1016/j.bios.2014.03.016

Cited by 36 publications

(20 citation statements)

References 44 publications

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“…Removal of H 2 S has further use in purifying hydrocarbons for fuel cells . PEI is also a useful polyelectrolyte in biofuel cells and tandem solar cells, and has been used in methanol cells to promote electrocatalysis and stability . Sensing of biomolecules, such as glucose and proteins, using PEI in nanocomposites has also been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Martini coarse‐grained model for polyethylenimine

Mahajan

Tang

2018

J Comput Chem

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As a polycation with diverse applications in biomedical and environmental engineering, polyethylenimine (PEI) can be synthesized with varying degrees of branching, polymerization, and can exist in different protonation states. There have been some interests in molecular modeling of PEI at all‐atom or coarse‐grained (CG) levels, but present CG models are limited to linear PEIs. Here we present the methodology to systematically categorize bond lengths, bond angles and dihedral angles, which allows us to model branched PEIs. The CG model was developed under the Martini scheme based on eight ~600 Da PEIs, with four different degree of branching at two different protonation states. Comparison of the CG model with all‐atom simulations shows good agreement for both local (distributions for bonded interactions) and global (end‐to‐end distance, radius of gyration) properties, with and without salt. Compatibility of the PEI model with other CG bio‐molecules developed under the Martini scheme will allow for large‐scale simulations of many PEI‐enabled processes. © 2018 Wiley Periodicals, Inc.

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Section: Introductionmentioning

confidence: 99%

Martini coarse‐grained model for polyethylenimine

Mahajan

Tang

2018

J Comput Chem

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“…However, to the best of our knowledge, the detection of ethanol with a self‐powered bioelectrochemical device based on enzyme electrodes has not yet been addressed and ethanol/O 2 driven biofuel cells were mainly developed for energy conversion applications. For the latter, rather conventional bioelectrochemical designs were employed based on an alcohol converting bioanode bearing ADH or AOx and an O 2 reducing cathode, e. g. Pt‐electrodes or enzyme electrodes comprising bilirubin oxidase or laccase . Since O 2 acts as the natural oxidant for reduced AOx, parasitic current losses due to O 2 reduction at the anode may occur in miniaturized one‐compartment cells.…”

Section: Introductionmentioning

confidence: 99%

A Self‐Powered Ethanol Biosensor

et al. 2017

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We describe the fabrication of a self‐powered ethanol biosensor comprising a β‐NAD+‐dependent alcohol dehydrogenase (ADH) bioanode and a bienzymatic alcohol oxidase (AOx) and horseradish peroxidase (HRP) biocathode. β‐NAD+ is regenerated by means of a specifically designed phenothiazine dye (i. e. toluidine blue, TB) modified redox polymer in which TB was covalently anchored to a hexanoic acid tethered poly(4‐vinylpyridine) backbone. The redox polymer acts as an immobilization matrix for ADH. Using a carefully chosen anchoring strategy through the formation of amide bonds, the potential of the TB‐based mediator is shifted to more positive potentials, thus preventing undesired O2 reduction. To counterbalance the rather high potential of the TB‐modified polymer, and thus the bioanode, a high‐potential AOx/HRP‐based biocathode is suggested. HRP is immobilized in a direct‐electron‐transfer regime on screen‐printed graphite electrodes functionalized with multi‐walled carbon nanotubes. The nanostructured cathode ensures the wiring of the iron‐oxo complex within oxidized HRP, and thus a high potential for the reduction of H2O2 of about +550 mV versus Ag/AgCl/3 M KCl. The proposed biofuel cell exhibits an open‐circuit voltage (OCV) of approximately 660 mV and was used as self‐powered device for the determination of the ethanol content in liquor.

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“…[1][2][3][4][5] EBFCs utilize enzymes to convert the chemical energy in fuels such as glucose, [6][7][8] fructose [9][10][11] or alcohols [12][13][14] into electrical power via oxidation of fuel at the anode and reduction of an oxidant (typically molecular oxygen) at the cathode. The mild operation conditions and inherent biocompatibility of the enzyme-based system, along with the high specificity of enzymes, leading to membrane-less systems and thus an ease of miniaturization, make EBFCs ideal candidates for the continuous powering of implantable devices.…”

Section: Introductionmentioning

confidence: 99%

Membrane/Mediator-Free Rechargeable Enzymatic Biofuel Cell Utilizing Graphene/Single-Wall Carbon Nanotube Cogel Electrodes

Campbell

Jeong

Geier

et al. 2015

ACS Appl. Mater. Interfaces

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Enzymatic biofuel cells (EBFCs) utilize enzymes to convert chemical energy present in renewable biofuels into electrical energy and have shown much promise in the continuous powering of implantable devices. Currently, however, EBFCs are greatly limited in terms of power and operational stability with a majority of reported improvements requiring the inclusion of potentially toxic and unstable electron transfer mediators or multicompartment systems separated by a semipermeable membrane resulting in complicated setups. We report on the development of a simple, membrane/mediator-free EBFC utilizing novel electrodes of graphene and single-wall carbon nanotube cogel. These cogel electrodes had large surface area (∼ 800 m(2) g(-1)) that enabled high enzyme loading, large porosity for unhindered glucose transport and moderate electrical conductivity (∼ 0.2 S cm(-1)) for efficient charge collection. Glucose oxidase and bilirubin oxidase were physically adsorbed onto these electrodes to form anodes and cathodes, respectively, and the EBFC produced power densities up to 0.19 mW cm(-2) that correlated to 0.65 mW mL(-1) or 140 mW g(-1) of GOX with an open circuit voltage of 0.61 V. Further, the electrodes were rejuvenated by a simple wash and reloading procedure. We postulate these porous and ultrahigh surface area electrodes will be useful for biosensing applications, and will allow reuse of EBFCs.

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Biofuel cell for generating power from methanol substrate using alcohol oxidase bioanode and air-breathed laccase biocathode

Cited by 36 publications

References 44 publications

Martini coarse‐grained model for polyethylenimine

Martini coarse‐grained model for polyethylenimine

A Self‐Powered Ethanol Biosensor

Membrane/Mediator-Free Rechargeable Enzymatic Biofuel Cell Utilizing Graphene/Single-Wall Carbon Nanotube Cogel Electrodes

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