SYNTHESIS AND CHARACTERIZATION OF SILVER NANO PARTICLES DOPED REDUCED GRAPHENE OXIDE FOR METHANE GAS SENSING AT ROOM TEMPERATURE

Abstract

This paper is devoted to an investigation on the methane sensing properties of graphene (G), decorated with silver nanoparticles (AgNPs), at room temperature. Graphene has noteworthy logical consideration in light of its extraordinary compound, mechanical and electrical properties. This exceptionally solid two dimensional (2D) material has forthcoming application in gas sensors. Methane gas sensor are significant for human wellbeing and security. Methane is profoundly lethal gas and intense to identify in view of its drab, and can get into human blood through lungs or skin. It moves into the tissues where it ties with oxygen and lessening the measure of oxygen there. This prompts cerebral pain, wooziness, disarray and even demise at high focus and long-lasting introduction. Thus, we report the utilization of Graphene, surrendered Graphene (as a rule called diminished Graphene Oxide), and silver nanoparticles/Graphene Nano composite film for methane detecting at surrounding conditions. The AgNP/rGO film on substrate is then used, as a resistivity-based sensor, to examine its response to the presence of methane gas. Our results show sensing of methane concentrations up to 150 sccm, the maximal response increases linearly and rapidly, even at room temperature. Moreover, we demonstrate that AgNPs/rGO is of low limit of detection, highly stable, selective, and reversible for methane sensing. Our prototype thus promise a low-cost and simple-to-fabricate methane sensing device Keywords: Graphene Oxide, Reduced Graphene Oxide, Silver nanoparticles, Methane