【摘要】 用芘丁酸修饰氧化石墨烯,加入铜离子,与芘丁酸进行羧基耦合,将氧化石墨烯桥连成三维网状结构,形成电子的传输通道,从而增强石墨烯的导电性。对制备的复合材料退火,制备出纳米铜/石墨烯复合导电膜。利用扫描电镜、透射电镜、紫外、红外、X射线衍射和拉曼光谱,对纳米铜/石墨烯复合材料进行形貌、微观结构、成分表征。利用四探针法测量其导电率,用拉曼光谱研究其表面增强拉曼光谱特性。研究结果表明,纳米铜/石墨烯复合材料导电膜的电导率大大提高,导电率为1780.3 S/cm,且有明显的表面增强拉曼光谱的特性。更多还原

【Abstract】 Graphene oxide(GO) was modified with pyrene butyric acid.Copper ions were added and coupled with pyrene butyric acid(PB) through carboxyl groups.The graphene oxide was bridged into a threedimensional network structure to form electron transport channels,thus enhancing the electrical conductivity of graphene.Nano-copper/graphene composite conductive film was prepared by annealing the prepared composite material.The morphology,microstructure and composition of Cu/graphene nanocomposites were characterized by scanning electron microscopy(SEM),transmission electron microscopy(TEM),ultraviolet(UV),infrared(IR),X-ray diffraction(XRD) and Raman spectroscopy.The conductivity was measured by four-probe method and the surface-enhanced Raman spectra were studied.The results show that the conductivity of the nano-copper/graphene composite film is greatly improved,and the conductivity is 1780.3 S/cm,and it also has excellent surface enhanced Raman spectroscopy property.更多还原