Effect of Different Synthesis Methods on the Optical Properties of Graphene/SnO2 Nanocrystals Composite Prepared via Chemical Reduction and Microwave Method

In this study, we have examined the luminescence characteristics of a compound including tin oxide and graphene, and also variations in the synthesis process. To synthesize SnO2 and graphene nano-composites, both chemical reduction and microwave synthesis were used. The SnO2/graphene-nanosheets composite was morphologically and optically altered by modification of the Sn2+ and GO manufacturing processes. SnO2 nanocrystals are randomly distributed on the surface of the graphene nanosheets (GN) and can be seen in the TEM image. The band gap for SnO2 and graphene vary depending on the synthesis technique, from 3.95 to 3.16 for SnO2: GNs-1 and SnO2: GNs-2, respectively. This work includes testing changes in the aggregation process. TGA testing shows that the composite has high thermal stability below 500 °C, which is useful for applications in electrical and optical storage devices.