Abstract
In this present work, an effective Liquefied Petroleum Gas (LPG) detecting nanocomposite of r-GO-CoSnO2 operable at room temperature was exhibited. Nanoparticles of Cobalt (Co) doped Tin Oxide (SnO2) nanoparticles were decorated uniformly over the reduced graphene oxide (rGO) layers. Reduction of graphene oxide (GO) into rGO and combination of metal oxide decoration was synthesized by one step using cost effective hydrothermal method using reductant hydrazine hydrate. Nanoparticles of CoSnO2 were self assembled over rGO via high pressure built inside the Teflon autoclave chamber. Structural and surface morphological characterizations confirmed the structure, size and shape of the prepared materials with distinct properties which are essential for a reliable sensing device. Distribution of metal oxide throughout the graphene layers act as an active site for the LPG molecules adsorption and desorption processes. For selectivity various analyte gases such as Hydrogen, Oxygen and Ammonia were examined. The proposed unique nanocomposite has exhibits low level detection of 2 ppm with quick response time of 4 s and recovery time of 5 s at room temperature. From these results it suggests that the proposed material will be a promising potential candidate for the fabrication of LPG sensor devices.
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