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

The Electrical Double Layer01:30

The Electrical Double Layer

197
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
197
Processes at Electrodes01:30

Processes at Electrodes

86
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...
86
Electrochemical Systems01:24

Electrochemical Systems

143
Electrochemical systems provide a fascinating insight into the dynamic interplay of charged species within various phases. One notable example is the interaction between a membrane permeable to K⁺ ions but not to Cl⁻ ions, separating an aqueous KCl solution from pure water. As K⁺ ions diffuse through the membrane, they generate net charges on each phase, leading to a potential difference between them.Similarly, when a piece of Zn is immersed in an aqueous ZnSO₄ solution,...
143
The Debye–Hückel Theory of Electrolyte Solutions01:27

The Debye–Hückel Theory of Electrolyte Solutions

287
The Debye–Hückel theory, established by Peter Debye and Erich Hückel in 1923, is a fundamental concept in physical chemistry. It provides an understanding of the behavior of strong electrolytes in solution, particularly explaining their deviations from ideal behavior.The theory is based on Coulombic interactions (the attraction or repulsion between charged particles) between ions in solution. In an ionic solution, oppositely charged ions tend to attract each other. This means...
287
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

1.1K
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...
1.1K
Electrogravimetric Analysis: Overview01:30

Electrogravimetric Analysis: Overview

968
Electrogravimetric analysis measures the weight of an analyte deposited electrolytically onto a suitable working electrode. This method involves applying a potential to a pre-weighed electrode submerged in a solution, which results in the desired substance being deposited through reduction at the cathode or oxidation at the anode. The electrode's weight is recorded after deposition, and the difference in weight gives the analyte's weight in the solution.
To test the completeness of the...
968

You might also read

Related Articles

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

Sort by
Same author

Water Vapor Binding on Organic Matter-Coated Minerals.

Environmental science & technology·2019
Same author

Network topology of stable isotope interactions in a sub-arctic raptor guild.

Oecologia·2016
Same author

Increased serum levels of lipopolysaccharide and antiflagellin antibodies in patients with diarrhea-predominant irritable bowel syndrome.

Neurogastroenterology and motility·2015
Same author

Bestrophin-3 is differently expressed in normal and injured mouse glomerular podocytes.

Acta physiologica (Oxford, England)·2015
Same author

Near infrared and skin impedance spectroscopy - a possible support in the diagnostic process of skin tumours in primary health care.

Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI)·2015
Same author

Sorption of phthalic acid at goethite surfaces under flow-through conditions.

Langmuir : the ACS journal of surfaces and colloids·2014

Related Experiment Video

Updated: Apr 15, 2026

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

8.4K

Electrolyte ion adsorption and charge blocking effect at the hematite/aqueous solution interface: an electrochemical

K Shimizu1, J Nyström, P Geladi

  • 1Department of Chemistry, Umeå University, 90187, Umeå, Sweden. kenichi.shimizu@chem.ox.ac.uk.

Physical Chemistry Chemical Physics : PCCP
|April 11, 2015
PubMed
Summary

Surface protonation of hematite influences charge carrier mobility and trapping. Electrochemical impedance spectroscopy (EIS) reveals how surface charge and ion interactions affect hematite

More Related Videos

Electrochemical Impedance Spectroscopy as a Tool for Electrochemical Rate Constant Estimation
08:41

Electrochemical Impedance Spectroscopy as a Tool for Electrochemical Rate Constant Estimation

Published on: October 10, 2018

26.1K
Precise Electrochemical Sizing of Individual Electro-Inactive Particles
05:03

Precise Electrochemical Sizing of Individual Electro-Inactive Particles

Published on: August 4, 2023

1.8K

Related Experiment Videos

Last Updated: Apr 15, 2026

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

8.4K
Electrochemical Impedance Spectroscopy as a Tool for Electrochemical Rate Constant Estimation
08:41

Electrochemical Impedance Spectroscopy as a Tool for Electrochemical Rate Constant Estimation

Published on: October 10, 2018

26.1K
Precise Electrochemical Sizing of Individual Electro-Inactive Particles
05:03

Precise Electrochemical Sizing of Individual Electro-Inactive Particles

Published on: August 4, 2023

1.8K

Area of Science:

  • Electrochemistry
  • Surface Science
  • Materials Science

Background:

  • The hematite/water interface is crucial for understanding mineral-water interactions.
  • Electrochemical properties govern surface reactivity and charge transport.
  • Model-free analysis offers new insights into complex electrochemical systems.

Purpose of the Study:

  • To investigate the electrochemical properties of the hematite/water interface.
  • To correlate surface protonation with charge carrier dynamics.
  • To determine the point of zero charge and ion adsorption effects.

Main Methods:

  • Model-free multivariate analysis using singular value decomposition (SVD).
  • Electrochemical impedance spectroscopy (EIS) in dilute NaCl and NH4Cl solutions.
  • Equivalent electrical circuit model refinement.

Main Results:

  • Surface protonation directly impacts charge carrier mobility and trapping.
  • The point of zero charge is identified by maximum charge transfer resistance and minimum double-layer capacitance.
  • NH4(+) ion adsorption influences capacitance and surface potential.

Conclusions:

  • Hematite's electrochemical activity is dependent on surface protonation and adsorption.
  • EIS, combined with SVD, provides in-depth analysis of mineral/water interfaces.
  • Understanding surface charge dynamics is key to controlling mineral electrochemical behavior.