This work demonstrates the application of magnetic carbon-encapsulated iron nanoparticles (CEINs) for construction bioelectrodes in a biobattery and biofuel cell. It has been shown that are suitable material immobilization laccase (Lc) 1,4-naphthoquinone (NQ) fructose dehydrogenase (FDH). The system is stable; no leaching enzyme mediator from surface modified electrode was observed. onset catal...

This paper introduces a novel design of membraneless microfluidic biofuel cell that incorporates three-dimensional porous electrodes containing immobilized enzymes to catalyze redox reactions occurring in the presence of ethanol/O2 co-laminar flows. In order to maximize the penetration depth of the reactants inside the porous medium, we report on the preliminary evaluation of cantilevered bioel...

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Broad application of microbial fuel cells (MFCs) requires low cost and high operational sustainability. Microbial-cathode MFCs, or cathodes using only bacterial catalysts (biocathodes), can satisfy these demands and have gained considerable attention in recent years. Achievements with biocathodes over the past 3-4 years have been particularly impressive not only with respect to the biological a...

Electromethanogenesis is a process of microbial electrosynthesis (MES) in which electroactive microorganisms reduce carbon dioxide (CO2) to produce methane (CH4), using cathode as an electron donor. The efficiency this reaction greatly determined by the establishment robust community on biocathodes, eventually affects global performance bioreactor. Moreover, development biofilm depends several ...

Reduction of dioxygen catalyzed by laccase was studied at platinum nanoparticles (PtNPs) modified electrodes. PtNPs with laccase are directly fabricated on glassy carbon electrode (GCE) and indium tin oxide electrode (ITO) by simple process. The PtNPs/laccase modified ITO electrode surface has been studied in detail using atomic force microscopy (AFM). This PtNPs/laccase modified GCE effectivel...

It was hypothesized that a lack of acetogenic biomass (biocatalyst) at the cathode of a microbial electrosynthesis system, due to electron and nutrient limitations, has prevented further improvement in acetate productivity and efficiency. In order to increase the biomass at the cathode and thereby performance, a bioelectrochemical system with this acetogenic community was operated under galvano...

Oxygen reducing biocathodes were formed at -0.2V/SCE (+0.04V/SHE) from compost leachate. Depending on whether aeration was implemented or not, two different redox systems responsible for the electrocatalysis of oxygen reduction were evidenced. System I was observed at low potential (-0.03V/SHE) on cyclic voltammetries (CVs). It appeared during the early formation of the biocathode (few hours) a...