Au纳米粒子修饰纳米片状结构衬底的SERS研究

摘要

通过电化学共沉积和化学脱合金处理在金属W片上制备了纳米片状基底,将Au纳米粒子通过等离子溅射到纳米片状基底上得到表面增强拉曼散射(SERS)衬底.采用扫描电子显微镜(FE-SEM)、能谱仪(EDX)对复合纳米衬底进行表征,罗丹明6G作为探测分子对SERS衬底的拉曼表面增强效果进行检测.通过实验发现:三维空间结构的纳米片状结构具有拉曼表面增强效应,溅射Au纳米颗粒得到的Au纳米片衬底信号增强效果显著.%Surface-enhanced Raman scattering ( SERS) substrate is fabricated using nanopetals dealloying film decorated by Au nanoparticles, which nanopetals films are fabricated on W sheet by electrochemical co-deposition and dealloying process, and the Au nanoparticles are plasma sputtered on the surface to form SERS substrate. Compound nano substrate is characterized by FE-SEM and EDX, respectively. The SERS effect is detected using Rhodamine 6G( R6G)as probe molecules on SERS substrate. It is found by experiment that the 3D space structure of the nanopetals has Raman surface enhancement effect, signal enhancement effect of Au nanopetals substrate obtained by Au nanoparticles sputtering is remarkable.