Synthesis of Graphene Nanofluids with Controllable Flake Size Distributions

Area of Science:

• Materials Science
• Nanotechnology
• Chemical Engineering

Background:

• Graphene nanofluids offer unique properties for various applications.
• Controlling graphene flake size distribution is crucial for optimizing nanofluid performance.
• Existing synthesis methods often lack precise control over flake size.

Purpose of the Study:

• To develop a method for synthesizing graphene nanofluids with controllable flake size distributions.
• To investigate the combined use of liquid-phase exfoliation and centrifugation for size control.
• To establish a reliable technique for producing graphene nanofluids with tailored properties.

Main Methods:

• Graphene nanoflakes were synthesized via liquid-phase exfoliation of graphite.
• Exfoliation time was utilized to control the lower limit of graphene nanoflake size.
• Centrifugation was employed to effectively control the upper limit of nanoparticle size distributions.

Main Results:

• A method combining exfoliation and centrifugation was successfully established.
• Precise control over both lower and upper limits of graphene nanoflake size distributions was achieved.
• The resulting graphene nanofluids exhibited controllable flake size distributions.

Conclusions:

• The combined exfoliation and centrifugation method provides effective control over graphene nanofluid properties.
• This technique enables the synthesis of tailored graphene nanofluids for specific applications.
• The developed method offers a pathway for scalable and reproducible production of high-quality graphene nanofluids.