Produção Nacional
Revisado por pares
Facile room temperature synthesis of large graphene sheets from simple molecules
2018; Royal Society of Chemistry; Volume: 9; Issue: 37 Linguagem: Inglês
10.1039/c8sc02818d
ISSN2041-6539
AutoresLaís C. Lopes, Lidya Cardozo da Silva, Boniek G. Vaz, Alfredo R. M. Oliveira, Marcela M. Oliveira, Maria Luiza M. Rocco, Elisa S. Orth, Aldo J. G. Zarbin,
Tópico(s)Carbon Nanotubes in Composites
ResumoThe largest graphene sample obtained through a chemical reaction under ambient conditions (temperature and pressure), using simple molecules such as benzene or n-hexane as precursors, is reported. Starting from a heterogeneous reaction between solid iron chloride and the molecular precursor (benzene and n-hexane) at a water/oil interface, graphene sheets with micrometric lateral size are obtained as a film deposited at the liquid/liquid (L/L) interface. The pathway involving the cyclization and aromatization of n-hexane to benzene at the L/L interface, and the sequence of conversion of benzene to biphenyl and biphenyl to condensed rings (which originates the graphene structures) was followed by different characterization techniques and a mechanistic proposal is presented. Finally, we demonstrate that this route can be extended for the synthesis of N-doped graphene, using pyridine as the molecular precursor.
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