Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Balancing Redox Equations02:58

Balancing Redox Equations

62.1K
Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...
62.1K
Redox Reactions01:24

Redox Reactions

58.7K
Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
58.7K
Redox Reactions01:27

Redox Reactions

1.0K
Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...
1.0K
Oxidation-Reduction Reactions03:11

Oxidation-Reduction Reactions

75.7K
Oxidation–Reduction Reactions
75.7K
Redox Equilibria: Overview01:23

Redox Equilibria: Overview

1.6K
A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
1.6K
Redox Titration: Overview01:21

Redox Titration: Overview

5.0K
Redox titration is a chemical analysis technique used to determine the concentration of an unknown substance by measuring the electron transfer in a redox (reduction-oxidation) reaction. The process involves gradually adding a titrant with a known concentration of an oxidizing or reducing agent, to the analyte, the solution with an unknown concentration, until reaching the endpoint, which indicates the completion of the reaction between the two substances. Ensuring the analyte is in a single...
5.0K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A rechargeable non-aqueous Mg-O<sub>2</sub> battery based on magnesium peroxide chemistry.

Nature chemistry·2026
Same author

Efficient Polyethylene Furanoate Synthesis From CO<sub>2</sub> and 5-(Hydroxymethyl)furfural.

ChemSusChem·2026
Same author

Multi-anion/cation engineering enables fast ion transport and stable interfaces in Zr-based halide electrolytes for all-solid-state batteries.

Chemical science·2026
Same author

Complete enzyme clustering enhances coenzyme Q biosynthesis via substrate channeling.

Nature communications·2026
Same author

Chaperonin recognition of protein dynamics drives drug resistance.

bioRxiv : the preprint server for biology·2026
Same author

LiFSA-KFSA binary molten salt enables durable lithium-antimony batteries at 80-100 °C.

Materials horizons·2026

Related Experiment Video

Updated: Feb 2, 2026

Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment
11:38

Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment

Published on: December 3, 2019

8.1K

Efficient solar-driven electrocatalytic CO2 reduction in a redox-medium-assisted system.

Yuhang Wang1, Junlang Liu1, Yifei Wang1

  • 1Laboratory of Advanced Materials, Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200438, China.

Nature Communications
|November 28, 2018
PubMed
Summary

This study presents a novel system for solar-driven carbon dioxide (CO2) reduction, mimicking photosynthesis. It achieves a record 15.6% solar-to-carbon monoxide (CO) efficiency by separating light and dark reactions.

More Related Videos

Making Record-efficiency SnS Solar Cells by Thermal Evaporation and Atomic Layer Deposition
14:01

Making Record-efficiency SnS Solar Cells by Thermal Evaporation and Atomic Layer Deposition

Published on: May 22, 2015

43.3K
Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts
10:15

Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts

Published on: November 7, 2025

708

Related Experiment Videos

Last Updated: Feb 2, 2026

Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment
11:38

Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment

Published on: December 3, 2019

8.1K
Making Record-efficiency SnS Solar Cells by Thermal Evaporation and Atomic Layer Deposition
14:01

Making Record-efficiency SnS Solar Cells by Thermal Evaporation and Atomic Layer Deposition

Published on: May 22, 2015

43.3K
Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts
10:15

Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts

Published on: November 7, 2025

708

Area of Science:

  • Electrochemistry
  • Renewable Energy
  • Catalysis

Background:

  • Solar-driven electrochemical carbon dioxide (CO2) reduction offers a sustainable pathway for producing valuable chemicals and mitigating global carbon footprints.
  • Intermittent sunlight poses challenges for maintaining consistent electrocatalytic efficiency and stability in solar energy applications.
  • Mimicking natural photosynthesis, which separates light-dependent and light-independent reactions, provides a model for overcoming these challenges.

Purpose of the Study:

  • To develop a novel redox-medium-assisted system for efficient and stable solar-driven CO2 reduction.
  • To decouple the light absorption and CO2 reduction steps for improved performance.
  • To achieve high solar-to-CO conversion efficiency and explore tunable selectivity.

Main Methods:

  • A system was designed integrating a nickel-iron hydroxide electrode for light-driven water oxidation and a zinc/zincate redox medium for energy storage.
  • The stored energy was utilized to spontaneously reduce CO2 to carbon monoxide (CO) using a gold nanocatalyst in dark conditions.
  • Varying current densities during the carbon fixation step were applied to tune efficiency and selectivity.

Main Results:

  • The developed system demonstrated a record solar-to-CO photoconversion efficiency of 15.6% under 1-sun illumination.
  • An impressive electric energy efficiency of 63% was achieved.
  • The system exhibited tunable solar-to-CO efficiency and selectivity through controlled current density during carbon fixation.

Conclusions:

  • The redox-medium-assisted system effectively addresses the intermittency of sunlight for solar-driven CO2 reduction.
  • This approach offers a promising strategy for efficient and stable conversion of CO2 into valuable chemicals.
  • The tunable nature of the system opens avenues for optimizing CO2 reduction processes for specific applications.