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Updated: May 31, 2026
14:52
Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding
Published on: September 23, 2018
Ethanol-assisted graphene oxide-based thin film formation at pentane-water interface
Fuming Chen1, Shaobin Liu, Jianmin Shen
1School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore.
Langmuir : the ACS Journal of Surfaces and Colloids
|July 1, 2011
Summary
We developed an ethanol-assisted method for rapid graphene oxide (GO) thin film formation at interfaces. This technique enables tunable properties for GO and composite films, enhancing material fabrication for diverse applications.
Area of Science:
- Materials Science
- Nanotechnology
- Surface Chemistry
Background:
- Graphene oxide (GO) is an amphiphilic material forming films at interfaces.
- Slow GO transfer in aqueous phases hinders efficient film formation.
- Existing methods lack sufficient driving force for rapid GO assembly.
Purpose of the Study:
- To present an ethanol-assisted self-assembly method for rapid GO and GO-based composite thin film formation.
- To achieve tunable film composition, transmittance, and surface resistivity.
- To explore the mechanism of ethanol-induced GO self-assembly.
Main Methods:
- Utilized an ethanol-assisted self-assembly technique at the pentane-water interface.
- Controlled GO film thickness by adjusting GO concentration in the bulk solution.
- Investigated GO/single-walled carbon nanotube (SWCNT) composite film formation.
Main Results:
- Achieved rapid formation of GO and reduced GO (rGO) thin films with controllable thickness (~1-10 nm).
- Tuned rGO film transmittance (72-97% at 550 nm) and surface resistivity (8.3-464.6 kΩ sq⁻¹).
- Demonstrated successful fabrication of GO/SWCNT composite films with significantly lower surface resistivity than pure rGO films.
Conclusions:
- Ethanol acts as a non-solvent, providing the necessary driving force for rapid GO self-assembly at interfaces.
- The method offers a versatile platform for fabricating functional GO-based hybrid materials.
- This approach accelerates GO film formation for advanced material applications.
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