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Related Concept Videos

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...

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Updated: May 13, 2026

Facile Preparation of Internally Self-assembled Lipid Particles Stabilized by Carbon Nanotubes
09:47

Facile Preparation of Internally Self-assembled Lipid Particles Stabilized by Carbon Nanotubes

Published on: February 19, 2016

Oil emulsification using surface-tunable carbon black particles.

Amitesh Saha1, Ani Nikova, Pradeep Venkataraman

  • 1Department of Chemical Engineering, University of Rhode Island, Kingston, Rhode Island 02881, USA.

ACS Applied Materials & Interfaces
|March 27, 2013
PubMed
Summary
This summary is machine-generated.

Researchers developed particle-stabilized emulsions using carbon black (CB) particles to address oil spills. These stable emulsions reduce the transport of toxic compounds, offering a promising alternative to conventional oil dispersants.

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Area of Science:

  • Environmental Science
  • Materials Science
  • Colloid and Surface Chemistry

Background:

  • Effective emulsification of spilled oil is crucial for natural remediation processes.
  • Conventional dispersants can create undesirable emulsions, necessitating the search for alternatives.
  • Particle-stabilized emulsions offer a potential solution for oil spill management.

Purpose of the Study:

  • To investigate particle-stabilized oil-in-water emulsions as an alternative to conventional oil dispersants.
  • To assess the stability and effectiveness of carbon black (CB) particles in forming and stabilizing oil emulsions.
  • To evaluate the adsorption of polycyclic aromatic hydrocarbons (PAHs) by CB particles within emulsions.

Main Methods:

  • Preparation of partially hydrophobic carboxyl-terminated carbon black (CB) particles by adjusting pH or salinity.
  • Formation of oil-in-water emulsions using CB particles and various oils (octane, crude oil).
  • Analysis of emulsion stability, adsorption of naphthalene (a model PAH) onto CB particles, and comparison with commercial dispersants (Corexit 9500A).

Main Results:

  • Stable oil-in-water emulsions were formed using CB particles, remaining intact for months.
  • CB particles significantly adsorbed naphthalene, reducing its transport into the water phase.
  • A stable crude oil-in-seawater emulsion was successfully formed using CB particles without additives, unlike Corexit 9500A.

Conclusions:

  • Surface-functionalized CB particles demonstrate potential as effective emulsifiers for oil spills due to their large surface area and adsorption capabilities.
  • These CB particle-based emulsions are stable and can reduce the mobility of toxic components like PAHs.
  • CB particles present a viable alternative or supplement to conventional dispersants for mitigating oil spill impacts and aiding natural degradation.