Synthesis of graphene like nano order thick graphitic flakes through industrial waste carbon and study of their hydrogen gas sensing properties.

Research progress in the field of synthesis of graphene-like nanosheets has been expeditiously growing in the recent years because of their incredible properties in various fields offered by these two-dimensional nanostructures. Nano order thick graphitic flakes, one of the forms of graphene, can be used for many applications such as conductive inks, supercapacitors, nanofluids, gas sensing, etc. Synthesis of graphene flakes definitely the way to reach bulk quantity production. Preparation of stack layer graphene-like nanosheets from industrial waste carbon flake is important for scalable production at a low cost and societal uses. Our novel work surmised the fabrication of Nano order thick graphitic flakes from industrial waste using the modified hummer's method. The basic morphological characteristics have been examined by X Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). Gas sensor was prepared by depositing a thin film on a figure-type interdicted electrode epoxy substrate. The sensing behavior was detected by monitoring the change in resistance after hydrogen gas exposure using a computer control indigenously developed hydrogen gas sensing unit. • This work presents novel synthesis of Nano order thick graphene-like nanosheets from industrial waste using hummer's method. • The qualitative and quantitative analysis of synthesize nanosheets have done by characterized physicochemical properties. • The synthesize nanosheets based chemiresistor type gas sensor was prepared and tested for hydrogen gas. • The sensor shows the faster response and higher sensitivity over a long period toward hydrogen gas at room temperature. [ABSTRACT FROM AUTHOR]