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Related Concept Videos

Electron Carriers01:24

Electron Carriers

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Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
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Catalysis02:50

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Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
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Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation.
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Role of Reduced Coenzymes NADH and FADH₂01:29

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The energy released from the breakdown of the chemical bonds within nutrients can be stored either through the reduction of electron carriers or in the bonds of adenosine triphosphate (ATP). In living systems, a small class of compounds functions as mobile electron carriers, molecules that bind to and shuttle high-energy electrons between compounds in pathways. The principal electron carriers that will be considered originate from the B vitamin group and are derivatives of nucleotides; they are...
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Related Experiment Video

Updated: Nov 1, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
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Bi-Atom Electrocatalyst for Electrochemical Nitrogen Reduction Reactions.

Wenchao Zhang1,2,3, Bin-Wei Zhang4

  • 1Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, People's Republic of China. wz990@uowmail.edu.au.

Nano-Micro Letters
|June 17, 2021
PubMed
Summary

Bi-atom catalysts significantly enhance the electrochemical nitrogen reduction reaction (NRR) for ammonia production. This innovation boosts reaction speed and selectivity, offering a greener alternative for ammonia synthesis.

Keywords:
Bi-atom catalystsElectrochemical nitrogen reduction reactionExcellent activityHigh selectivity

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Area of Science:

  • Electrochemistry
  • Catalysis
  • Materials Science

Background:

  • Electrochemical nitrogen reduction reaction (NRR) offers an eco-friendly route to synthesize ammonia (NH3) from nitrogen (N2) and water (H2O) at ambient conditions.
  • Current challenges in electrochemical NRR include slow reaction kinetics and poor selectivity, hindering practical applications.

Purpose of the Study:

  • To investigate the efficacy of bi-atom catalysts in improving the performance of the electrochemical nitrogen reduction reaction (NRR).
  • To explore how bi-atom catalysts can accelerate the N2-to-NH3 conversion and enhance selectivity.

Main Methods:

  • Utilized bi-atom catalysts for the electrochemical nitrogen reduction reaction (NRR).
  • Evaluated catalyst performance in terms of activity and selectivity for ammonia production.

Main Results:

  • Bi-atom catalysts demonstrated excellent activity and high selectivity for the electrochemical NRR.
  • The introduction of bi-atom catalysts effectively accelerated the N2-to-NH3 electrochemical conversion kinetics.

Conclusions:

  • Bi-atom catalysts represent a promising strategy for enhancing the performance of electrochemical NRR.
  • This approach offers improved efficiency and selectivity for green ammonia synthesis.