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

2.7K
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...
2.7K
Controlled-Potential Coulometry: Electrolytic Methods01:17

Controlled-Potential Coulometry: Electrolytic Methods

916
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...
916
Processes at Electrodes01:30

Processes at Electrodes

98
The electrode interacts with ions in the electrolyte solution at its interface. The rate of oxidation and reduction depends on the speed at which electrons can transfer through this interface. As ions attach to or leave the electrode surface, the electrode acquires a charge, and an electrical potential forms across the interface, making the process more difficult to reach equilibrium. The charge on the electrode affects the local ion concentrations in the solution, though thermal motion...
98
Electrochemical Cells01:28

Electrochemical Cells

405
Electrochemical cells are systems that convert chemical energy into electrical energy or use electrical energy to drive chemical reactions. They consist of two electrodes in contact with an electrolyte, where redox reactions enable electron transfer. Most electrochemical cells include two half-cells connected by an external wire for electron flow and a salt bridge for ion flow. The salt bridge contains an electrolyte solution and maintains charge neutrality by allowing ions—not...
405

You might also read

Related Articles

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

Sort by
Same author

Cation-Surface Interactions During Electrocatalytic Hydrogen Evolution Probed by Surface X‑ray Diffraction.

ACS physical chemistry Au·2026
Same author

The Role of Local pH in Electrocatalysis: Measurement, Impact, and Control Strategies.

ACS electrochemistry·2026
Same author

Assessing the potential of zero charge in ab initio molecular dynamics simulations.

The Journal of chemical physics·2026
Same author

Compensation effects between the apparent activation energy and pre-exponential factor in simple models of electrocatalytic hydrogen evolution.

Faraday discussions·2026
Same author

Metal-Hydrogen Batteries and Decoupled Electrolyzers: Converging Pathways for Hydrogen-Integrated Energy Storage.

ACS energy letters·2026
Same author

Dynamic CO Electrolysis to Methanol on Pt(111) Surfaces Modified with a Pd Monolayer.

ACS catalysis·2026
Same journal

Stability constants of lanthanide-nitrate complexes in aqueous solutions: a theoretical study.

Physical chemistry chemical physics : PCCP·2026
Same journal

Lead-free Cs<sub>3</sub>MnCl<sub>5</sub> and CsMnCl<sub>3</sub> crystals: rapid on-chip crystallization, phase transition and fluorescence sensing applications.

Physical chemistry chemical physics : PCCP·2026
Same journal

F-Interstitial passivation preserves host-like optoelectronic properties in <sup>229</sup>Th:YLF nuclear-clock platforms.

Physical chemistry chemical physics : PCCP·2026
Same journal

Structural trends of tryptophan dimer: hydrogen bonding <i>versus</i> π-stacking from an energy decomposition analysis perspective.

Physical chemistry chemical physics : PCCP·2026
Same journal

Achieving high thermoelectric performance in Sb<sub>2</sub>Se<sub>3</sub>-alloyed GeTe through synergistic optimization of electrical and thermal transport.

Physical chemistry chemical physics : PCCP·2026
Same journal

Ultraviolet perfect absorption leveraging bound states in the continuum in an Al/SiO<sub>2</sub> hybrid system.

Physical chemistry chemical physics : PCCP·2026
See all related articles

Related Experiment Video

Updated: May 1, 2026

Electrochemical Preparation of Poly3,4-Ethylenedioxythiophene Layers on Gold Microelectrodes for Uric Acid-Sensing Applications
10:48

Electrochemical Preparation of Poly3,4-Ethylenedioxythiophene Layers on Gold Microelectrodes for Uric Acid-Sensing Applications

Published on: July 28, 2021

3.7K

Electrocatalysis on gold.

Paramaconi Rodriguez1, Marc T M Koper

  • 1School of Chemistry, The University of Birmingham, Birmingham B15 2TT, UK. p.b.rodriguez@bham.ac.uk.

Physical Chemistry Chemical Physics : PCCP
|April 15, 2014
PubMed
Summary
This summary is machine-generated.

This review explores gold electrode electrocatalysis, highlighting pH and surface structure effects. Gold

More Related Videos

Versatile Technique to Produce a Hierarchical Design in Nanoporous Gold
05:28

Versatile Technique to Produce a Hierarchical Design in Nanoporous Gold

Published on: February 10, 2023

2.1K
Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
06:39

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells

Published on: October 20, 2023

3.8K

Related Experiment Videos

Last Updated: May 1, 2026

Electrochemical Preparation of Poly3,4-Ethylenedioxythiophene Layers on Gold Microelectrodes for Uric Acid-Sensing Applications
10:48

Electrochemical Preparation of Poly3,4-Ethylenedioxythiophene Layers on Gold Microelectrodes for Uric Acid-Sensing Applications

Published on: July 28, 2021

3.7K
Versatile Technique to Produce a Hierarchical Design in Nanoporous Gold
05:28

Versatile Technique to Produce a Hierarchical Design in Nanoporous Gold

Published on: February 10, 2023

2.1K
Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
06:39

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells

Published on: October 20, 2023

3.8K

Area of Science:

  • Electrochemistry
  • Materials Science
  • Catalysis

Background:

  • Gold electrodes are crucial in electrocatalysis for various redox reactions.
  • Understanding reaction mechanisms on gold surfaces is key to developing efficient catalysts.

Purpose of the Study:

  • To review recent advancements in the electrocatalytic reactions studied on gold electrodes.
  • To discuss the influence of pH and surface structure on gold electrocatalysis.

Main Methods:

  • Literature review of recent studies on gold electrode electrocatalysis.
  • Analysis of oxidation and reduction reactions including CO, alcohols, oxygen, amine boranes, and CO2.
  • Examination of the role of pH and surface structure in reaction kinetics.

Main Results:

  • Electrocatalysis on gold is highly sensitive to pH, often favoring alkaline conditions.
  • Gold's weak adsorption properties contribute to its selectivity, halting reactions at difficult bond-forming/breaking steps.
  • Surface structure significantly impacts reaction rates and selectivity.

Conclusions:

  • Gold is a selective electrocatalyst whose performance is modulated by pH and surface structure.
  • The pH dependence is linked to the role of negatively charged intermediates.
  • Further research into gold's surface chemistry can optimize its catalytic applications.