Authors: D P Hansora N G Shimpi S Mishra
Publish Date: 2015/07/03
Volume: 67, Issue: 12, Pages: 2855-2868
Abstract
This work represents a stateoftheart technique developed for the preparation of graphene from graphite–metal electrodes by the arcdischarge method carried out in a continuous flow of water Because of continuous arcing of graphitemetal electrodes the graphene sheets were observed in water with uniformity and little damage These nanosheets were subjected to various purification steps such as acid treatment oxidation water washing centrifugation and drying The pure graphene sheets were analyzed using Raman spectrophotometry xray diffraction XRD field emissionscanning electron microscopy FESEM and tunneling electron microscopy TEM Peaks of Raman spectra were recorded at 1300–1400 cm−1 and 1500–1600 cm−1 for weak Dband and strong Gband respectively The XRD pattern showed 856 crystallinity of pure graphite whereas pure graphene was 664 crystalline TEM and FESEM micrographs revealed that graphene sheets were overlapped to each other and layerbylayer formation was also observed Beside this research work we also reviewed recent developments of graphene and related nanomaterials along with their preparations properties functionalizations and potential applications
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