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Bioinspired Enzyme-Like Mechanism Enables Adaptive Local Charge Modulation for Blue Energy Harvesting.

Zhe Li1,2, Kai Chen1,2, Tianyun Jing1,2

  • 1State Key Laboratory of Bioinspired Interfacial Materials Science, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, China.

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Summary
This summary is machine-generated.

This study introduces bioinspired iron-cobalt dual-atom nanozymes for enhanced osmotic energy conversion. These nanozymes dynamically regulate charge, boosting power generation from mixing river and seawater.

Keywords:
bioinspired nanozymesheteronuclear diatomicion‐selective membraneosmotic energy conversion

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Electrochemistry

Background:

  • Improving ion-selective membranes is key for efficient osmotic energy conversion.
  • Current charge-regulation methods fail in dynamic ion-transport conditions.

Purpose of the Study:

  • To develop a novel charge-regulation strategy for enhanced osmotic energy conversion.
  • To mimic natural enzyme mechanisms for improved ion selectivity and activity.

Main Methods:

  • Fabrication of atomically precise heteronuclear FeCo dual-atom nanozymes (FeCo-DACs).
  • Incorporation of FeCo-DACs into bacterial cellulose membranes (BC/FeCo-DACs).
  • Experimental and theoretical analyses of charge regulation and ion transport.

Main Results:

  • FeCo-DACs exhibit an oxidase-like mechanism for dynamic local charge modulation.
  • Optimized coordination environments enhance enzyme-like activity and ion selectivity.
  • The BC/FeCo-DACs membrane achieved a power density of 15.4 W m⁻².

Conclusions:

  • Bioinspired FeCo-DACs offer a promising approach for advanced osmotic energy conversion.
  • Dynamic charge regulation via heteronuclear dual-atom sites significantly improves performance.
  • The study highlights the potential of nanozymes in sustainable energy applications.