Deconvolution and quantitation of Raman spectrum of graphene oxide synthesized by improved hummers method

Graphene oxide (GO) is synthesized from graphite fine powder using the Improved Hummers method. The structural, microstructural, and functional groups are characterized using X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), and Fourier Transform InfraRed (FTIR) spectroscopy. The interplanar spacing obtained from XRD is 9.1 Å for (100) plane, confirming graphene oxide formation. Raman spectroscopy is utilized to observe the characteristic modes and obtain the crystallite size for graphene-related materials. The Raman spectrum includes broad first and second-order vibrational bands of Graphene oxide. The deconvoluted peak positions are acceptable quantitated bands of the graphene oxide. The calculated crystallite size, La from the Raman spectrum, is 14.7 nm.