Abstract
Systematic report on the synthesis of Nitrogen-doped graphene (N-doped GNP) via solid-state ball milling of graphite with melamine powder is represented in the article. At the first time, the article briefs the mathematical representation for energy released at different speed of rotation of planetary ball mill using the various diameter of balls. It was observed that large diameter balls release more energy as compared to smaller balls. However, when combination of balls with different diameters were used, the energy released was much larger as compared with balls of individual diameter. Solid-state ball milling technique has successfully exfoliated the graphite into multilayer graphene and at the same time it has doped the nitrogen atoms onto the edge of graphene sheets. Field-emission scanning electron (FESEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and particle size analyzer has confirmed the quality and final particle size of as-prepared graphene nanosheets (GNP). The particle size of 48 h milled graphene is observed to be double to that of 72 h graphene sample.
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