固态离子学方法制备宏观银纳米线阵列  

Preparation of Macroscopic Silver Nanowire Arrays by a Solid-State Ionics Method

作　　者：徐大鹏[1] 张松[1] 杨巍[1] XU Dapeng ZHANG Song YANG Wei(School of Materials and Chemical Engineering, Xi ＇ an Technological University, Xi ＇ an 710021, China)

机构地区：[1]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》2017年第5期405-410,共6页Journal of Xi’an Technological University

基　　金：国家自然科学基金(11504284);陕西省教育厅专项科研计划项目(16JK1377)

摘　　要：传统的拉曼增强基底均匀性差、排列无序和重复性差等缺点限制了拉曼增强机理的深入研究和广泛应用.选取具有高离子电导率的快离子导体RbAg4I5薄膜,利用固态离子学方法在不同外加电流(2μA、4μA和6μA)作用下制备了宏观银纳米线阵列.利用扫描电子显微镜(SEM)观测银纳米线阵列的表面形貌,利用能量色散光谱仪(EDS)测量银纳米线阵列的化学成分.结果表明:随着外加电流的增加,分别制备了稀疏的无序排列银纳米线阵列,稀疏的有序排列银纳米线阵列和平行于表面密集排列的银纳米竹节簇阵列.外加电流为2μA和6μA时制备的银纳米线阵列表面均匀分布着纳米颗粒,直径从10~20nm增大到50~100nm.The traditional Raman enhanced substrates have the disadvantages,such as low uniformity,disordered arrangement and poor repeatability,which restrict further research and the wide application of the Raman strengthening mechanism.Macroscopical silver nanowire arrays were obtained by a solid-state ionics method using fast ionic conductor RbAg4I5 films with high ionic conductivity under the different impressed currents（2μA,4μA and 6μA）.The surface morphology and chemical composition of the silver nanowire arrays were characterized by scanning electron microscopy（SEM）and energy dispersive spectrometer（EDS）,respectively.The results showed that with the increase of impressed currents,sparse disordered silver nanowire arrays,sparse ordered silver nanowire arrays and densely arranged silver nano bamboo arrays parallel to the substrate surface were obtained.When the impressed current was 2 μA and 6 μA,nano particles with diameters of from 10~20 nm to 50~100 nm uniformly distributed on the surface of prepared silver nanowire arrays.

关 键 词：固态离子学方法 快离子导体 宏观 银纳米线阵列 

分 类 号：O614.122[理学—无机化学] TB383.1[理学—化学]