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

Extraction: Advanced Methods00:56

Extraction: Advanced Methods

432
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
432
Ion Exchange01:17

Ion Exchange

564
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
564
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

223
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...
223
Coagulation01:06

Coagulation

278
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
278

You might also read

Related Articles

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

Sort by
Same author

A Bifunctional Organosilane Additive for Dynamic pH Regulation and Interfacial Protection in Aqueous Zinc-Ion Batteries.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Heterogeneous Indirect Redox Electrocatalysis in Electrolyte.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Cascade Oxidation of Ethylene and Propylene over a Redox Heterometallic Cluster.

Journal of the American Chemical Society·2026
Same author

Triple-Regulation Strategy toward Multivariate Isomeric Covalent Organic Frameworks for Efficient Photocatalysis.

Journal of the American Chemical Society·2026
Same author

Tuning the Disordered Structure: Recent Advances in Amorphization Engineering for Enhanced Photocatalysis.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Cyano-Triggered Strong Anion-π Interactions: Unlocking Anion-Cation Adsorption Bifunction.

Angewandte Chemie (International ed. in English)·2026

Related Experiment Video

Updated: Jun 12, 2025

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
07:45

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

9.9K

Solid-Liquid-Gas Three-Phase Indirect Electrolysis Enabled by Affinity Auxiliary Imparted Covalent Organic

Yi-Rong Wang1, Ming Yue1, Gang Liu2

  • 1Guangdong Provincial Key Laboratory of Carbon Dioxide Resource Utilization, School of Chemistry, South China Normal University, 510006, Guangzhou, P. R. China.

Angewandte Chemie (International Ed. in English)
|September 23, 2024
PubMed
Summary

Researchers developed a novel three-phase indirect electrolysis system using a covalent organic framework (Dha-COF-Cu) as a redox mediator for efficient S-S coupling reactions.

Keywords:
COFsIndirect electrolysisRedox mediatorS−S coupling reactionThree phase

More Related Videos

Author Spotlight: Optimizing Hollow-Fiber Membranes for Continuous Liquid-Liquid Extraction of Medium-Chain Fatty Acids
06:45

Author Spotlight: Optimizing Hollow-Fiber Membranes for Continuous Liquid-Liquid Extraction of Medium-Chain Fatty Acids

Published on: August 9, 2024

1.1K
Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
08:42

Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

Published on: July 10, 2017

13.3K

Related Experiment Videos

Last Updated: Jun 12, 2025

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
07:45

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

9.9K
Author Spotlight: Optimizing Hollow-Fiber Membranes for Continuous Liquid-Liquid Extraction of Medium-Chain Fatty Acids
06:45

Author Spotlight: Optimizing Hollow-Fiber Membranes for Continuous Liquid-Liquid Extraction of Medium-Chain Fatty Acids

Published on: August 9, 2024

1.1K
Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
08:42

Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

Published on: July 10, 2017

13.3K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Organic Chemistry

Background:

  • Developing efficient heterogeneous redox mediators is crucial for indirect electrolysis systems.
  • Current challenges include achieving favorable substrate and electrolyte affinity for mediators.

Purpose of the Study:

  • To design and implement a novel solid-liquid-gas three-phase indirect electrolysis system.
  • To utilize a covalent organic framework (Dha-COF-Cu) as a heterogeneous redox mediator for S-S coupling.

Main Methods:

  • Synthesis of Dha-COF-Cu, a porous covalent organic framework with integrated copper sites.
  • Implementation of a three-phase indirect electrolysis system for S-S coupling reactions.
  • Characterization of Dha-COF-Cu's properties, including porosity, morphology, and active sites.

Main Results:

  • Dha-COF-Cu demonstrated high porosity, nanorod morphology, abundant hydroxyl groups, and active copper sites.
  • The material facilitated thiol adsorption/activation, uniform dispersion, and efficient interfacial electron transfer.
  • The system achieved excellent electrocatalytic efficiency for S-S bond formation (99% yield) and hydrogen gas generation (1.40 mmol g⁻¹ h⁻¹).

Conclusions:

  • The developed Dha-COF-Cu based three-phase indirect electrolysis system is highly efficient for S-S coupling.
  • This work represents the first application of covalent organic frameworks in three-phase indirect electrolysis.
  • The findings may advance the use of porous crystalline materials in electrochemical applications.