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Highly Efficient Method for Preparing Homogeneous and Stable Colloids Containing Graphene Oxide.

Wei Yu1, Huaqing Xie2, Xinwei Wang3

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Nanoscale Research Letters
|August 10, 2016
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A novel phase transfer method enables stable graphene oxide colloids. This technique efficiently transfers graphene oxide nanosheets (GONs) to organic solvents, enhancing their solubility and applicability in various materials.

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ColloidGraphene oxideOleylaminePhase transfer method

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Colloid Chemistry

Background:

  • Graphene oxide (GO) is a promising material with unique properties.
  • Dispersing GO in organic solvents is challenging for many applications.
  • Developing stable GO colloids in non-aqueous media is crucial.

Purpose of the Study:

  • To develop a simple and efficient phase transfer method for preparing stable graphene oxide colloids.
  • To investigate the modification and properties of graphene oxide nanosheets (GONs) after transfer.
  • To achieve high solubility of GONs in organic solvents.

Main Methods:

  • Phase transfer of graphene oxide nanosheets (GONs) from water to n-octane.
  • Modification of GONs using oleylamine for improved compatibility with organic solvents.
  • Characterization of the morphology and solubility of modified GONs.

Main Results:

  • Homogeneous and stable graphene oxide colloids were successfully prepared.
  • Modified GONs exhibited corrugation and scrolling.
  • Maximum solubility of GONs in n-octane reached 3.82 mg mL(-1).
  • Oleylamine molecules were chemically attached to the GONs.

Conclusions:

  • The developed phase transfer method is simple, efficient, and effective for preparing stable graphene oxide colloids.
  • Chemically modified GONs demonstrate enhanced solubility in organic solvents.
  • This method offers a viable route for incorporating graphene oxide into organic-based materials and systems.