核壳纳米复合颗粒Au_(rod)@Ag和Au_(rod)@Ag@Au合成及SERS应用  

Preparation and its SERS application of core-shell nanoparticles Au_(rod)@Ag and Au_(rod)@Ag@Au

作　　者：龙世佳 刘杨 司长代 冯小强 汪河滨 LONG Shi-jia;LIU Yang;SI Chang-dai;FENG Xiao-qiang;WANG He-bin(School of Chemical Engineering and technology,Key Laboratory of Advanced Optoelectronic Functional Materials of Gansu Province,Key Laboratory for New Molecule Materials Design and Function of Gansu Universities,Tianshui Normal University,Tianshui 741001,China)

机构地区：[1]天水师范学院化学工程与技术学院,甘肃省先进光电功能材料重点实验室,甘肃高校新型分子材料设计与功能省级重点实验室,甘肃天水741001

出　　处：《化学研究与应用》2025年第4期873-880,共8页Chemical Research and Application

基　　金：天水市科技计划项目(2023-FZJHK-8287)资助;天水师范学院课程思政项目(无机化学实验Ⅱ)资助;天水师范学院人才培养质量提升项目(无机化学优秀教研室)资助。

摘　　要：通过外延生长法以金纳米棒为核制备了Au_(rod)@Ag核壳纳米八面体及Au_(rod)@Ag@Au复合纳米立方体,利用诱导试剂调控实现壳层形状可控制备,核壳金银协同效应使得所制备金核银壳纳米粒子既具有金溶胶的均匀性,又具备银溶胶的表面增强拉曼效应(SERS),是高增强因子的新型活性基底。研究结果表明:与金棒、Au_(rod)@Ag@Au相比,Au_(rod)@Ag是更好的拉曼增强基底,其对罗丹明6G的增强因子高达3.12×10^(9),可实现罗丹明6G的定量检测。Au_(rod)@Ag truncated octahendron and Au_(rod)@Ag@Au core-shell nanocubes with a gold nanorod in the center are synthesized in high yields by an epitaxial growth approach,and inducing reagents are used for controlling shell morphology.The size of gold sols is more uniform than that of silver sol,but silver sols show stronger Raman enhence efficiency than gold sols,the prepared Au/Ag core-shell nanocomposites maintaining simultaneously above advantages in the synergistic effect of gold-silver,which is a type of active substrate with high enhancement factor of the surface enhanced Raman scattering(SERS)effect.Compared with gold rods and Au_(rod)@Ag@Au,the Au_(rod)@Ag core-shell hybrid nanocomposites exhibit a better SERS activity,and the enhancement factor of the Raman signals obtained from the Au_(rod)@Ag substrate is 3.12×10^(9)for rhodamine 6G.The substrate can be used for a quantitative determination of rhodamine 6G dye.

关 键 词：金纳米棒 核壳纳米复合颗粒 SERS效应 硅片表面 

分 类 号：O614.1[理学—无机化学]