| 摘要 |
<p>The invention refers to the obtention of graphene by the aerosol chemical vapor deposition method, which uses an organic solvent solution and a salt of a metal with electronegativity lower than 1.63. This solution is nebulized and dragged to a metallic substrate located at the inner portion of a tube or chamber with a temperature of from about 700°C to about 900°C. Due to the high temperature, the organic solvent is decomposed, thus promoting the diffusion of C under the surface of the substrate, which forms a graphene layer during the cooling phase. The metal of the salt dissolved in the precursor solution is reacted with the oxygen retained in the system, avoiding the harmless effects thereof during the synthesis. It is important to note, that the size of the graphene layer can be modified as required, the number of atomic layers may be controlled by modifying the synthesis conditions. Finally, once the synthesis is performed over the metallic substrate (Ni or other alloy), it is po ssible to detach the graphene layer and arrange it in any surface so as to be subsequently used.</p> |
