Synthesis and Characterization of Graphene/Cu2SnS3 Quantum Dots Composites

摘要

In this paper,employing graphite oxide (GO),CuCl,SnCl4·5H2O and dimethyl sulfoxide (DMSO) as raw materials,the composites of graphene/Cu2SnS3 quantum dots (QDs) were prepared simply and quickly using the hydrothermal method.Meanwhile,the separate Cu2SnS3 QDs were also synthesized in the same way.The as-obtained Cu2SnS3 QDs and composites' phase structures were analyzed and characterized by powder X-ray diffraction (XRD),and the results indicated that the size of the Cu2SnS3 QDs in the composites were less than that of the separate Cu2SnS3 QDs.At the same time,their morphologies were also observed and cross-confirmed by Transmission Electron Microscopy (TEM),and the measurements manifested that Cu2SnS3 QDs were uniformly dispersed on the surface of the graphene,while the separate Cu2SnS3 QDs have obvious glomeration.In addition to this,elemental analysis was also made to verify the existence of Cu2SnS3 on the surface of graphene.