Synthesis and characterisation of VG nanosheets on silica aerogel by plasma-enhanced chemical vapour deposition method

Vertical graphene (VG) nanosheets are directly grown on silica aerogel and silicon substrate (100) by plasma-enhanced chemical vapour deposition process in the presence of hydrogen as a reducing agent at atmospheric pressure at 800 degrees C. The physiochemical properties of the nanohybrid were thoroughly characterised by Raman spectroscopy, scanning electron microscopy (SEM) and atomic force microscopy (AFM). The presence of full wave half maximum of D, G and D ' indicates VG nanowalls. The height (50 nm) of the VG nanowalls were confirmed by SEM and Raman spectroscopy but AFM reveals it as 15 nm. Surface and cross-sectional SEM show the uniform distribution of vertical growth of nanowalls and the AFM revealed surface morphology of VG nanowalls.