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Hydrophobic Salt-modified Nafion for Enzyme Immobilization and Stabilization
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Single-Enzyme Biofuel Cells.

Chao Ji1,2, Jingwei Hou1, Kai Wang3

  • 1School of Chemical Engineering, The University of New South Wales, Australia.

Angewandte Chemie (International Ed. in English)
|June 24, 2017
PubMed
Summary
This summary is machine-generated.

Harnessing intramolecular electron transfer in single enzymes generates electricity from pollutants and CO2. This novel single-enzyme biofuel cell offers efficient energy production and waste utilization.

Keywords:
electrochemistryelectron transferenzymesfuel cellslaccase

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Area of Science:

  • Biotechnology
  • Electrochemistry
  • Enzyme catalysis

Background:

  • Enzyme-based biofuel cells typically require multiple enzymes.
  • Efficient electricity generation from recalcitrant pollutants remains a challenge.

Purpose of the Study:

  • To demonstrate intramolecular electron transfer within a single enzyme molecule as a pathway for electricity generation.
  • To develop a novel single-enzyme biofuel cell for efficient energy harvesting from unconventional fuels.

Main Methods:

  • Decoupling redox reactions within a single enzyme (Trametes versicolor laccase).
  • Utilizing recalcitrant pollutants (bisphenol A, hydroquinone) as fuels.
  • Demonstrating the concept with other enzymes like formate dehydrogenase for CO2 bioconversion.

Main Results:

  • Efficient electricity generation was achieved using a single-laccase biofuel cell.
  • The system successfully utilized pollutants and CO2 for power generation.
  • Intramolecular electron transfer proved to be an effective energy harvesting mechanism.

Conclusions:

  • Single-enzyme biofuel cells offer a promising approach for sustainable energy generation.
  • This technology can utilize wastewater and drive bioconversion processes.
  • Harnessing intramolecular electron transfer opens new avenues for bioelectrochemical systems.