Synthesis of few layer graphene by direct exfoliation of graphite and a Raman spectroscopic study
By S. Gayathri, P. Jayabal, M. Kottaisamy, V. Ramakrishnan. 2014
191 citations recorded by the source corpus.
The exfoliation of graphene from pristine graphite in a liquid phase was achieved successfully via sonication followed by centrifugation method. Ultraviolet–visible (UV–vis) spectra of the obtained graphene dispersions at different exfoliation time indicated that the concentration of graphene dispersion increased markedly with increasing exfoliation time. The sheet-like morphology of the exfoliated graphene was revealed by Scanning Electron Microscopy (SEM) image. Further, the morphological change in different exfoliation time was investigated by Atomic Force Microscopy (AFM). A complete structural and defect characterization was probed using micro-Raman spectroscopic technique. The shape and position of the 2D band of Raman spectra revealed the formation of bilayer to few layer graphene. Also, Raman mapping confirmed the presence of uniformly distributed bilayer graphene sheets on the substrate.
Subfields: Electrical and Electronic Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/82b02a01c663592b0b319f13d3b2cc256de9f3e6
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In Electrical and Electronic Engineering
In Materials Chemistry
Citations in the corpus
- Thermogravimetric Analysis (TGA) of Graphene Materials: Effect of Particle Size of Graphene, Graphene Oxide and Graphite on Thermal Parameters (2021, background): “33, suggesting that these graphene materials experienced mild level of defects compared to graphite that could be resulting from the exfoliation process [29].”