石墨烯-硒化银纳米复合材料的制备、表征及光学性能研究

One-Step Synthesis, Characterization and Optical Property of Graphene-Silver Selenide Nanocomposites

摘要:

运用简单的一步反应水热法制备了石墨烯-硒化银（G-Ag2Se）纳米复合材料。用X射线粉末衍射 (XRD)、傅里叶变换红外光谱(FTIR) 和透射电子显微镜 (TEM) 等手段对所得产物进行了系统的表征。结果表明，反应体系中，硒化银纳米粒子的形成与氧化石墨烯的还原同时进行。石墨烯氧化物被充分地还原为石墨烯，并且Ag2Se纳米粒子均匀地分布在石墨烯的片层上，形成纳米复合材料。对所制备的G-Ag2Se纳米复合材料的光学性质也进行了研究。

Abstract:

We report a facile and efficient strategy for the preparation of graphene-Ag2Se nanocomposites. The reduction of graphene oxide (GO) to graphene was accompanied by the formation of Ag2Se particles on the surface of graphene nanosheets. The results of X-ray diffraction (XRD) and Fourier transform infrared (FTIR) confirmed the efficient reduction of GO. Transmission electron microscopy (TEM) images of the sample revealed the morphology of the architecture of graphene-Ag2Se hybrid. Photoluminescence (PL) measurement was further employed to study the optical properties of the nanocomposites. The results show that the graphene-Ag2Se nanocomposites can be prepared by a simple hydrothermal method, and Ag2Se particles are well distributed on the graphene nanosheets.