固态离子学法制备金纳米带及其SERS应用  

Preparation of Gold Nanobelts by Solid State Ionics Method and Their Surface Enhanced Raman Scattering Application

作　　者：张松 张彤 徐大鹏[2] ZHANG Song;ZHANG Tong;XU Dapeng(General Affairs Department,Xi’an Technological University,Xi’an 710021,China;School of Materials Science and Chemical Engineering,Xi’an Technological University,Xi’an 710021,China)

机构地区：[1]西安工业大学总务处,西安710021 [2]西安工业大学材料与化工学院,西安710021

出　　处：《西安工业大学学报》2022年第3期270-275,共6页Journal of Xi’an Technological University

基　　金：国家自然科学基金(11504284);陕西省重点研发项目(2021GY-230)

摘　　要：为了获得具有高灵敏度的表面增强拉曼散射(SERS)基底,文中采用固态离子学法,选取RbAg_(4)I_(5)薄膜作为快离子导体薄膜,在9μA外加电流作用下制备了金纳米带。利用扫描电子显微镜(SEM)和能谱仪(EDS)对金纳米带的表面形貌和化学成分进行表征。选取罗丹明6G(R6G)水溶液作为探针分子并测试了金纳米带基底的拉曼增强性能。研究结果表明:固态离子学法制备的金纳米带宏观长度为3~7 mm,纳米带的带宽分布范围为0.5~4.5μm,纳米带表面均匀分布着直径∅为10~20 nm的纳米颗粒从而使得制备的纳米带具有很高的表面粗糙度,制备的金纳米带作为SERS基底探测罗丹明6G的极限浓度可以达到10-15 mol·L^(-1)。In order to obtain the surface enhanced Raman scattering(SERS)substrate with high sensitivity,gold nanobelts were prepared by the solid state ionics method under 9μA impressed current with RbAg_(4)I_(5) films as the fast ionic conductor film.The surface morphology and chemical composition of the gold nanobelts were characterized with a scanning electron microscopy(SEM)and an energy dispersive spectrometer(EDS),respectively.The Raman enhancement performance of the gold nanobelt substrates was tested with Rhodamine 6G(R6G)aqueous solutions as probe molecules.The results show that the gold nanobelts prepared by the solid state ionics method have a macroscopic length of 3 to 7 millimeters and a belt width ranging from 0.5 to 4.5μm and that nanoparticles with the diameter of 10~20 nm lie on the surface of the prepared nanobelts,leading to high surface roughness.The limiting concentrations of R6G for the prepared gold nanobelt SERS substrates can reach 10-15 mol·L^(-1).

关 键 词：固态离子学法 高表面粗糙度 金纳米带 表面增强拉曼散射 

分 类 号：O433.4[机械工程—光学工程]