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

Coagulation01:06

Coagulation

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...
The Colloidal State01:29

The Colloidal State

The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called the...
Colloidal precipitates01:09

Colloidal precipitates

The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
Colloids and Suspensions01:17

Colloids and Suspensions

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...
Colloids03:22

Colloids

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
Electrochemical Systems01:24

Electrochemical Systems

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, the Zn metal, composed...

You might also read

Related Articles

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

Sort by
Same author

Machine Learning-Assisted Optimization of Iodide Electrolytes for Efficient Indoor Dye-Sensitized Solar Cells with Engineered Photoanodes.

Small science·2026
Same author

Insights from Impedance Spectroscopy in Perovskite Solar Cells with Self-Assembled Monolayers: Decoding SAM's Tricks.

The journal of physical chemistry letters·2025
Same author

NiO<sub></sub> Passivation in Perovskite Solar Cells: From Surface Reactivity to Device Performance.

ACS applied materials & interfaces·2024
Same author

The dual nature of metal halide perovskites.

The Journal of chemical physics·2024
Same author

Influence of Redox Couple on the Performance of ZnO Dye Solar Cells and Minimodules with Benzothiadiazole-Based Photosensitizers.

ACS applied energy materials·2022
Same author

Photochromic spiro-indoline naphthoxazines and naphthopyrans in dye-sensitized solar cells.

Materials chemistry frontiers·2022

Related Experiment Video

Updated: Jul 17, 2026

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
10:56

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

Secondary minimum coagulation in charged colloidal suspensions from statistical mechanics methods.

María Cortada1, Juan A Anta, J A Molina-Bolívar

  • 1Departamento de Sistemas Físicos, Químicos y Naturales, Area de Química-Física, Universidad "Pablo de Olavide", Ctra. de Utrera, Km. 1, 41013 Sevilla, Spain.

The Journal of Physical Chemistry. B
|February 3, 2007
PubMed
Summary

This study predicts critical coagulation parameters for charged colloids using statistical mechanics. The novel extrapolation method accurately reproduces experimental trends for colloidal suspensions.

More Related Videos

Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy
13:15

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

Published on: July 18, 2014

Related Experiment Videos

Last Updated: Jul 17, 2026

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
10:56

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy
13:15

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

Published on: July 18, 2014

Area of Science:

  • Colloid and Surface Chemistry
  • Statistical Mechanics
  • Physical Chemistry

Background:

  • Understanding colloidal suspension stability is crucial in various scientific and industrial applications.
  • Secondary minimum coagulation is a key phenomenon influencing the long-term behavior of charged colloidal systems.
  • Predicting critical parameters for this process requires robust theoretical frameworks.

Purpose of the Study:

  • To develop and apply a statistical mechanics approach for predicting critical coagulation parameters in the secondary minimum.
  • To estimate the locus of the critical point for charged colloidal suspensions.
  • To compare theoretical predictions with experimental data for polystyrene latexes.

Main Methods:

  • Utilized the reference hypernetted chain (RHNC) integral equation.
  • Employed an extrapolation procedure to determine critical salt concentration by finding where inverse compressibility approaches zero.
  • Validated the method against experimental secondary minimum coagulation data for polystyrene latexes.

Main Results:

  • The RHNC-based statistical mechanics approach successfully predicts critical coagulation parameters.
  • The developed extrapolation procedure is efficient and yields results comparable to previous methods.
  • Theoretical predictions show good agreement with experimental trends across various colloidal diameters.

Conclusions:

  • The statistical mechanics approach provides a reliable method for predicting secondary minimum coagulation critical parameters.
  • The novel extrapolation technique offers a more rapid and accurate estimation of critical points.
  • The study demonstrates strong concordance between theoretical modeling and experimental observations in colloidal systems.