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The hybrid film was prepared by in-situ spraying graphene oxide sheet solution onto an aligned, freestanding carbon nanotube aerogel sheet during winding the sheet on a rotating mandrel, followed by high-temperature annealing.
The graphene film was released by protecting the graphene sheet with polymethylmethacrylate (PMMA) solution (20 mg/mL) spin-coated on graphene/copper foil at 4,000 rpm for 30 s and dried in air.
The new method for metal catalyst-free direct synthesis of a graphene sheet is through a solution-processable, inexpensive, easy, and reproducible cross-linked polythiophene self-assembled monolayer (SAM) that is formed via the [4 + 2] π cycloaddition reaction of π-electron conjugated thiophene layer self-assembled on the dielectric silicon dioxide substrate.
An amphiphilic aromatic molecular sheet based on four pyrene units and a laterally grafted hydrophilic oligoxyethylene dendron was designed by Lee and co-workers for selective dispersion of 2-D graphene sheets in MeOH/water solution [63].
In this paper, the oxygen reduction reaction (ORR) was studied on anthraquinone (AQ) modified and unmodified graphene sheets in aqueous solutions.
Besides, the SS surface was coated with Cu solution, which had never been attempted before, to promote high quality of graphene sheet on SS surface.
For the transfer process, the as-grown graphene sheet on Cu foil was first spin coated with a layer of polycarbonate, followed by etching in HCl aqueous solution to remove the Cu foil.
Since all the unwanted graphene flakes are covered by undissolved photoresist, this only transfers the desired graphene sheet.
single layer graphene sheet.
(b) Single graphene sheet configuration.
(c) Twin graphene sheet configuration.
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