Investigation of Raman and photoluminescence studies of reduced graphene oxide sheets

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Synthesis, characterization and electrochemical properties of functionalized graphene oxide (2012, background): “The former is due to the vibration of sp-bonded carbon atoms in a 2D hexagonal lattice [11,46] and the latter is caused by the vibrations of carbon atoms with dangling bonds in plane terminations of disordered graphite [11].”
A green approach for the reduction of graphene oxide nanosheets using non-aromatic amino acids (2014, background): “[51] Krishnamoorthy K, Veerapandian M, Mohan R, Kim S-J.”
Carbonisation of biomass-derived chars and the thermal reduction of a graphene oxide sample studied using Raman spectroscopy (2013, background): “Increasing ID / IG type ratios have been previously reported for graphene oxide during the reduction process [63, 71, 73, 74], although many researchers in the graphene oxide field appear to have so-far overlooked the recent literature which clearly demonstrates that maxima of ID / IG type ratios ty”
The chemical and structural analysis of graphene oxide with different degrees of oxidation (2013, background): “Our previous study also showed that the presence of graphitic islands in GO results in quantum fluctuations leading to an opening of the band gap in the electronic structure of GO [28].”