一种具有SERS基底的制备及其活性研究  

A preparation of SERS substrate and its activity research

作　　者：许丽真 关贵清 敖晖 黄坤新 翁雪花 林建平 XU Li-zhen;GUAN Gui-qing;AO Fei;HUANG Kun-xin;WENG Xue-hua;LIN Jian-pin(Department of Mathematics and Physics,Ningde Normal University,Ningde,Fujian 352100,China;Institute of Physics and Energy,Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials(Fujian Normal University),Fuzhou,Fujian 350117,China)

机构地区：[1]宁德师范学院数理学院,福建宁德352100 [2]福建省量子调控与新能源材料重点实验室(福建师范大学),福建福州350117

出　　处：《宁德师范学院学报（自然科学版）》2018年第1期28-33,共6页Journal of Ningde Normal University(Natural Science)

基　　金：国家级大学生创新创业训练计划项目(201710398017);宁德师范学院重大项目培育计划项目(2017ZDK04);宁德市科技计划项目(20150169)

摘　　要：在空白石英基片上热蒸发沉积不同厚度的银纳米颗粒膜,这些纳米颗粒膜可用作表面增强拉曼散射(SERS)的活性基底.利用X射线衍射仪和扫描电子显微镜观测纳米颗粒膜的晶体结构和表面形貌;测量不同浓度的罗丹明6G(R6G)分子吸附在纳米颗粒膜上的SERS光谱.结果表明,不同样品的银纳米颗粒的平均粒径分别为46 nm、65 nm和80 nm,石英基底上的银纳米颗粒具有很好的SERS活性,可探测出浓度为10-7 mol/L的R6G分子,SERS光谱强度与银纳米颗粒的大小有关,平均粒径为65 nm,样品的SERS增强效应最好.Silver nanoparticles films with different thicknesses were deposited on the quartz substrate templates by thermal evaporation.These nanoparticles films were used as the surface-enhance Raman scattering(SERS)active substrates.The microstructure and surface morphology of the films were measured by X-ray diffraction and scanning electron microscopy.The SERS activity of the films was investigated by Raman scattering of adsorbed rhodamine 6G(R6G)at different concentrations.The results reveal that the average particle size of Ag nanoparticles in different samples is 46 nm,65 nm,and 80 nm,respectively.Ag nanoparticles film on quartz substrate template is very suitable as a SERS active substrate and can detect R6G molecule with a concentration of 10-7 mol/L.SERS intensity is related to both the silver nanoparticles size.The sample with an average particle size of 65 nm has the largest SERS.

关 键 词：热蒸发 石英基片 银纳米颗粒膜 表面增强拉曼散射 

分 类 号：O484.4[理学—固体物理]