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

Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

2.2K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.2K
Voltammetric Techniques: Cyclic Voltammetry01:10

Voltammetric Techniques: Cyclic Voltammetry

300
Cyclic voltammetry (CV) is an electrochemical technique used to investigate the redox properties of a chemical species. It involves measuring the current response of an electrochemical cell as a function of the applied potential. The setup for cyclic voltammetry typically consists of a working electrode, a reference electrode, and a counter electrode—all immersed in an electrolyte solution. The working electrode is where the redox reaction of interest occurs, while the reference electrode...
300
Controlled-Potential Coulometry: Electrolytic Methods01:17

Controlled-Potential Coulometry: Electrolytic Methods

98
Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
The chosen potential...
98
Controlled-Current Coulometry: Overview01:27

Controlled-Current Coulometry: Overview

118
Controlled current coulometry, also known as amperostatic coulometry, is a technique used in electrochemical analysis to measure the quantity of a substance through the controlled passage of current. It involves the application of a constant current to an electrochemical cell containing the analyte of interest. As the current flows through the cell, the analyte undergoes a redox reaction at the electrode surface, resulting in a charge transfer. By monitoring the time required for a certain...
118
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

198
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
198
Electrochemistry: Overview01:04

Electrochemistry: Overview

556
Electrochemistry is the branch of chemistry that studies the relationship between electrical quantities and chemical reactions, particularly oxidation and reduction. Oxidation is the loss of electrons from a substance, whereas reduction refers to the gain of electrons. A substance with a strong electron affinity is called an oxidizing agent (oxidant), and a reducing agent (reductant) is a species that donates electrons. Oxidation and reduction processes are pivotal to electrochemical reactions,...
556

You might also read

Related Articles

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

Sort by
Same author

Tensile strength suppresses the osteogenesis of periodontal ligament cells in inflammatory microenvironments.

Molecular medicine reports·2017
Same author

A PDGFB mutation causes paroxysmal nonkinesigenic dyskinesia with brain calcification.

Movement disorders : official journal of the Movement Disorder Society·2017
Same author

A Molecular Switch Regulating Cell Fate Choice between Muscle Progenitor Cells and Brown Adipocytes.

Developmental cell·2017
Same author

Microarray analysis of differentially expressed genes and their functions in omental visceral adipose tissues of pregnant women with vs. without gestational diabetes mellitus.

Biomedical reports·2017
Same author

Development and validation of a simplified titration method for monitoring volatile fatty acids in anaerobic digestion.

Waste management (New York, N.Y.)·2017
Same author

Association Analysis of Nonsyndromic Congenital Heart Disease and Tag Single Nucleotide Polymorphisms of TBX20 and Genes in the Ras-MAPK Pathway.

Genetic testing and molecular biomarkers·2017

Related Experiment Video

Updated: May 11, 2025

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

8.3K

A Pulsed Tandem Electrocatalysis Strategy for CO2 Reduction.

Hao Sun1, Jing-Yao Liu1

  • 1Institute of Theoretical Chemistry, College of Chemistry, Jilin University, Changchun 130023, China.

Journal of the American Chemical Society
|April 18, 2025
PubMed
Summary

This study introduces a dual-site single-atom nanozyme (DSAN) for efficient carbon dioxide (CO2) electroreduction to C2 products. Pulsed electrocatalysis enhances CO2 conversion and ethanol selectivity by optimizing tandem catalytic mechanisms.

More Related Videos

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

18.0K
Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells
14:37

Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells

Published on: November 5, 2014

9.3K

Related Experiment Videos

Last Updated: May 11, 2025

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

8.3K
Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

18.0K
Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells
14:37

Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells

Published on: November 5, 2014

9.3K

Area of Science:

  • Electrochemistry
  • Catalysis
  • Materials Science

Background:

  • CO2 electroreduction to C2 products is challenging due to slow C-C coupling and side reactions.
  • Multienzyme systems inspire tandem catalytic mechanisms for enhanced efficiency.

Purpose of the Study:

  • To design a dual-site single-atom nanozyme (DSAN) for efficient CO2 electroreduction.
  • To investigate the role of pulsed electrocatalysis in optimizing C2 product formation.

Main Methods:

  • Designed a DSAN with FeN4 and FeO4 active sites.
  • Employed Density Functional Theory (DFT) calculations under constant potential.
  • Utilized a pulsed electrocatalysis strategy alternating between 0 V and -0.7 V.

Main Results:

  • FeN4 site generates CO, FeO4 site facilitates CO migration and C-C coupling.
  • Pulsed potential switching dynamically modulates active-site functions for CO2 adsorption and C2 formation.
  • Optimized CH3CH2OH selectivity by suppressing excessive hydrogenation via pulsed potential control.

Conclusions:

  • The synergistic strategy of tandem catalysis and pulsed potential control is effective for CO2-to-C2 conversion.
  • DSANs offer a novel approach for enhancing electrocatalytic efficiency.
  • Pulsed electrocatalysis provides dynamic control over active sites for improved product selectivity.