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

Electrodeposition01:08

Electrodeposition

747
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
747
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

488
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...
488
Electrolysis03:00

Electrolysis

27.4K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
27.4K
Extraction: Advanced Methods00:56

Extraction: Advanced Methods

564
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...
564
Controlled-Potential Coulometry: Electrolytic Methods01:17

Controlled-Potential Coulometry: Electrolytic Methods

309
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...
309
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

3.5K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.5K

You might also read

Related Articles

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

Sort by
Same author

Soap Microfilms Enhance Interfacial Reactivity for Ambient, Green Nanomaterial Synthesis.

Journal of the American Chemical Society·2026
Same author

The origin of spontaneous oxidation in a floating oil nanofilm.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Ambient, Bias-Free, Green Nanoparticle Synthesis via Microdroplet-Confined Galvanic Chemistry.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Multi-Modal Characterization of the Interactions between a Recombinant Protein Antigen and a Liposomal Adjuvant.

Molecular pharmaceutics·2026
Same author

Localized Accumulation of Tri-n-Propylamine Prolongs Electrochemiluminescence for Tumor Model Spheroid Analysis.

Angewandte Chemie (International ed. in English)·2026
Same author

Post-Conjugation Process for Antibody-Conjugated Lipid Nanoparticles Enabling Tunable Antibody Surface Density for Targeted RNA Delivery.

ACS nano·2026
Same journal

Precursor-Directed Self-Assembly in Hydrothermal Carbon Nitride Nanostructures Revealed by Nano-FTIR.

The journal of physical chemistry letters·2026
Same journal

Correction to "Equation-of-Motion Block-Correlated Coupled Cluster Method for Excited Electronic States of Strongly Correlated Systems".

The journal of physical chemistry letters·2026
Same journal

Rationalizing Stacking-Dependent Charge Injection Dynamics in Radical-Based Organic Light-Emitting Diodes.

The journal of physical chemistry letters·2026
Same journal

Bottom-Up Formation of the Simplest Geminal Thiol─Methanedithiol (CH<sub>2</sub>(SH)<sub>2</sub>)─and the Methyl Hydrodisulfide (H<sub>3</sub>CSSH) Isomer in Interstellar Analogue Ices.

The journal of physical chemistry letters·2026
Same journal

Trion Mediated Sequential Charge Separation in Functionalized CsPbBr<sub>3</sub>/AgInS<sub>2</sub> Hybrid Nanocrystals.

The journal of physical chemistry letters·2026
Same journal

Linking Local Water Electrostatic Potentials to Measured Hydrogen Evolution Onset in Aqueous Electrolytes.

The journal of physical chemistry letters·2026
See all related articles

Related Experiment Video

Updated: Sep 27, 2025

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction
09:20

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

Published on: January 26, 2016

15.5K

Preferential Electroreduction at the Oil|Water|Conductor Interface.

Thomas B Clarke1, Jeffrey E Dick1,2

  • 1Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States.

The Journal of Physical Chemistry Letters
|April 8, 2022
PubMed
Summary
This summary is machine-generated.

Chemistry in confined aqueous droplets differs from bulk water. We show preferential electroreduction occurs at the oil|water|conductor three-phase boundary, impacting interfacial reactivity studies.

More Related Videos

Reductive Electropolymerization of a Vinyl-containing Poly-pyridyl Complex on Glassy Carbon and Fluorine-doped Tin Oxide Electrodes
09:17

Reductive Electropolymerization of a Vinyl-containing Poly-pyridyl Complex on Glassy Carbon and Fluorine-doped Tin Oxide Electrodes

Published on: January 30, 2015

12.0K
Characterizing Electron Transport through Living Biofilms
08:52

Characterizing Electron Transport through Living Biofilms

Published on: June 1, 2018

8.5K

Related Experiment Videos

Last Updated: Sep 27, 2025

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction
09:20

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

Published on: January 26, 2016

15.5K
Reductive Electropolymerization of a Vinyl-containing Poly-pyridyl Complex on Glassy Carbon and Fluorine-doped Tin Oxide Electrodes
09:17

Reductive Electropolymerization of a Vinyl-containing Poly-pyridyl Complex on Glassy Carbon and Fluorine-doped Tin Oxide Electrodes

Published on: January 30, 2015

12.0K
Characterizing Electron Transport through Living Biofilms
08:52

Characterizing Electron Transport through Living Biofilms

Published on: June 1, 2018

8.5K

Area of Science:

  • Physical Chemistry
  • Interfacial Science
  • Nanotechnology

Background:

  • Chemistry in confined volumes, like aqueous droplets, exhibits unique properties compared to bulk water.
  • Probing interfacial reactivity in complex, multiphase environments is challenging due to limited techniques.

Purpose of the Study:

  • To demonstrate and characterize preferential electroreduction at the oil|water|conductor (three-phase) interface.
  • To highlight the significance of interfacial phenomena in chemical and biological reactions.

Main Methods:

  • Electrodeposition of cobalt and nickel onto the three-phase boundary.
  • Characterization using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS).
  • Electrochemical reduction of resazurin to resorufin at the three-phase boundary.

Main Results:

  • Formation of nanometer-precision ringlike structures from cobalt and nickel electrodeposition.
  • Preferential electroreduction of resazurin to resorufin observed at the three-phase boundary.
  • Observed preferential electroreduction is independent of droplet geometry.

Conclusions:

  • The oil|water|conductor three-phase boundary facilitates preferential electroreduction.
  • Interfacial reactivity at the three-phase boundary can significantly alter chemical processes.
  • These findings have broad implications for chemistry and biology, emphasizing the role of interfaces.