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Related Concept Videos

Colloids03:22

Colloids

19.3K
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...
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Colloidal precipitates01:09

Colloidal precipitates

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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...
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Coagulation01:06

Coagulation

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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...
588
Colloids and Suspensions01:17

Colloids and Suspensions

2.6K
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...
2.6K

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Related Experiment Video

Updated: Nov 11, 2025

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

Published on: July 18, 2014

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General in Colloidal Nanoparticles.

Jaehi Kim1, Xuan-Hung Pham1, Hyejin Chang2

  • 1Department of Bioscience and Biotechnology, Konkuk University, Seoul, South Korea.

Advances in Experimental Medicine and Biology
|March 30, 2021
PubMed
Summary
This summary is machine-generated.

Understanding nanoscience principles is crucial for fabricating well-defined nanoparticles. This knowledge enables control over nanoparticle size and prevents aggregation during synthesis.

Keywords:
AggregationDLVO theoryNucleation

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Related Experiment Videos

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Area of Science:

  • Nanoscience and Nanotechnology
  • Materials Science

Background:

  • Fabricating size-controlled nanomaterials is challenging due to unpredictable growth and dissolution.
  • A fundamental understanding of nanoscience is essential for reproducible nanoparticle synthesis.

Purpose of the Study:

  • To explain the basic theories of nanomaterials.
  • To describe methods for controlling nanoparticle size.
  • To outline strategies for preventing nanoparticle aggregation.

Main Methods:

  • Theoretical explanation of nanomaterial behavior.
  • Discussion of size-control techniques.
  • Presentation of anti-aggregation strategies.

Main Results:

  • Provides foundational knowledge in nanoscience.
  • Details methods for achieving desired nanoparticle sizes.
  • Offers solutions for maintaining nanoparticle stability.

Conclusions:

  • Understanding nanoscience is key to fabricating well-defined nanoparticles.
  • Effective methods exist for controlling size and preventing aggregation.