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- W4309673432 abstract "Microbial fuel cells (MFCs) are recognized as eco-friendly technology to convert chemical energy from waste into electricity by biocatalytic microorganisms and biomass as fuel feedstocks. Here, a three-dimensional DNA origami nanostructure serving as electron mediator-methylene blue (MB) carriers was first employed to enhance the electron production and transfer in the anode compartment of Escherichia coli system-based MFCs. By loading MB molecules on DNA origami nanostructures, the MFC with the MB/DNA origami-modified carbon felt (CF) electrode showed the highest voltage production (64 mV) and power density (5.78 mW/m2) compared to bare CF and MB-modified CF electrodes. The enhanced MFC performance was attributed to the larger interface area of DNA origami-assisted MB loading and a biocompatible bacterial growth environment on the anode, which led to E. coli adhesion and fast electron transfer. Furthermore, the MFC with MB/DNA origami modifications could stably operate for three cycles (20 days) with constant voltage discharge without further addition of media. These results show that DNA origami is a promising material serving as an electron mediator carrier for sustainable energy systems, which could get over the drawbacks of carrier-free MFCs, such as short lifetime, continuously adding supplies, and toxicity to both the microorganisms and the natural environment." @default.
- W4309673432 created "2022-11-29" @default.
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- W4309673432 date "2022-11-22" @default.
- W4309673432 modified "2023-09-27" @default.
- W4309673432 title "Enhancement of Electricity Production of Microbial Fuel Cells by Using DNA Nanostructures as Electron Mediator Carriers" @default.
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- W4309673432 doi "https://doi.org/10.1021/acssuschemeng.2c04399" @default.
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