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

Protein-protein Interfaces02:04

Protein-protein Interfaces

13.9K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
13.9K
Ionic Crystal Structures02:42

Ionic Crystal Structures

15.5K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
15.5K
Metallic Solids02:37

Metallic Solids

19.4K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
19.4K
Aqueous Solutions and Heats of Hydration02:42

Aqueous Solutions and Heats of Hydration

15.5K
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
15.5K
Intermolecular Forces03:13

Intermolecular Forces

62.3K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
62.3K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

45.1K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
45.1K

You might also read

Related Articles

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

Sort by
Same author

Controlling the Double Layer of Platinum by Selective Passivation of Step Sites Using Adatom Modification.

Journal of the American Chemical Society·2026
Same author

Surface Electrochemistry of Au(111) in Acetonitrile Based Electrolytes: Formation of a Solvent Related Adsorbed Layer.

The journal of physical chemistry letters·2026
Same author

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

ACS physical chemistry Au·2026
Same author

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

The Journal of chemical physics·2026
Same author

Molecular Insights into the Double-Layer Capacitance of Platinum Surfaces in Alkaline Media.

JACS Au·2026
Same author

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

Faraday discussions·2026

Related Experiment Video

Updated: Oct 6, 2025

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
10:28

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Published on: May 27, 2018

8.9K

Double-layer structure of the Pt(111)-aqueous electrolyte interface.

Kasinath Ojha1, Katharina Doblhoff-Dier1, Marc T M Koper2

  • 1Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands.

Proceedings of the National Academy of Sciences of the United States of America
|January 19, 2022
PubMed
Summary

We measured the double-layer capacitance at the platinum-electrolyte interface, finding deviations from standard models at low concentrations. Ion size and hydration influence capacitance at higher concentrations, leading to a new interface model.

Keywords:
Gouy–ChapmanPt(111)double layerinterfacial water

More Related Videos

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures
11:54

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures

Published on: February 8, 2018

10.4K
Electrochemical Roughening of Thin-Film Platinum Macro and Microelectrodes
08:32

Electrochemical Roughening of Thin-Film Platinum Macro and Microelectrodes

Published on: June 30, 2019

8.0K

Related Experiment Videos

Last Updated: Oct 6, 2025

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
10:28

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Published on: May 27, 2018

8.9K
Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures
11:54

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures

Published on: February 8, 2018

10.4K
Electrochemical Roughening of Thin-Film Platinum Macro and Microelectrodes
08:32

Electrochemical Roughening of Thin-Film Platinum Macro and Microelectrodes

Published on: June 30, 2019

8.0K

Area of Science:

  • Electrochemistry
  • Surface Science
  • Physical Chemistry

Background:

  • The electrical double layer at electrode-electrolyte interfaces is crucial for electrochemical processes.
  • Traditional Gouy-Chapman-Stern (GCS) theory describes this layer but has limitations.
  • Understanding the Pt(111)-electrolyte interface is key for catalysis and sensing.

Purpose of the Study:

  • To investigate the double-layer capacitance of the Pt(111)-electrolyte interface near the potential of zero charge (PZC).
  • To identify deviations from GCS theory and explore ion-specific effects.
  • To develop an improved model for the electrical double layer structure.

Main Methods:

  • Detailed capacitance measurements of the Pt(111)-electrolyte interface.
  • Systematic variation of electrolyte concentrations and ion types.
  • Formulation of a new double-layer model by combining existing theories.

Main Results:

  • Observed significant deviations from GCS behavior at low electrolyte concentrations, independent of ion type.
  • Identified ion-specific capacitance effects related to ion size and hydration at higher concentrations.
  • Developed a model that accurately reproduces experimental capacitance data.

Conclusions:

  • The Pt(111)-electrolyte interface exhibits complex behavior beyond GCS theory.
  • Ion-surface interactions and water reorganization significantly influence the double layer structure.
  • The new model provides a more comprehensive understanding of interfacial phenomena.