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Oxygenic Photosynthesis01:26

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Oxygenic photosynthesis is a fundamental process in which light energy is harnessed to drive the oxidation of water, leading to the production of molecular oxygen (O₂), adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate (NADPH). This process is essential for sustaining aerobic life on Earth and is primarily carried out by cyanobacteria, algae, and plants. The core of oxygenic photosynthesis lies in the thylakoid membranes, where chlorophyll pigments facilitate...
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Expression and Purification of Nuclease-Free Oxygen Scavenger Protocatechuate 3,4-Dioxygenase
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High-Efficiency Oxygen Evolution Reaction: Controllable Reconstruction of Surface Interface.

Lianhui Wu1, Zhixi Guan1, Daying Guo1,2,3

  • 1Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China.

Small (Weinheim an Der Bergstrasse, Germany)
|August 8, 2023
PubMed
Summary
This summary is machine-generated.

Surface reconstruction is key for oxygen evolution reaction (OER) catalysts. Controlling this process optimizes catalytic activity and performance by understanding the underlying mechanisms.

Keywords:
oxygen evolution reactionsurface controllable reconstructiontransition metals

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Catalysis

Background:

  • The oxygen evolution reaction (OER) is crucial for energy conversion technologies.
  • Precatalysts transform into active species via surface reconstruction during OER.
  • The extent of this reconstruction significantly impacts catalytic efficiency.

Purpose of the Study:

  • To elucidate the relationship between surface reconstruction degree and catalytic activity in OER.
  • To provide a mechanistic understanding for designing high-performance OER electrocatalysts.
  • To review strategies for controllable surface reconstruction in OER.

Main Methods:

  • Brief introduction to OER reaction mechanisms.
  • Discussion on the competition between adsorbate evolution mechanism (AEM) and lattice oxygen-mediated mechanism (LOM).
  • Summary of OER activity descriptors.
  • Emphasis on mechanistic perspective linking dynamic surface reconstruction and electronic structure.

Main Results:

  • Strategies for controllable OER surface reconstruction include ion leaching, doping, size regulation, heterogeneous engineering, and self-reconstruction.
  • Controlled surface reconfiguration can overcome limitations of the AEM mechanism.
  • Switching between AEM and LOM mechanisms can achieve ultra-low overpotential.

Conclusions:

  • Understanding OER surface reconstruction is vital for rational electrocatalyst design.
  • Controlled surface reconstruction offers a pathway to enhance OER performance beyond traditional limits.
  • This review provides references for OER transition metal-based catalysts and performance development.