一步法制备无表面修饰剂花状金纳米颗粒及其表面增强拉曼散射性能研究  

Gold Nanoflower Without Surface Modifier Prepared by One-step Method and Its Surface-Enhanced Raman Scattering Property

作　　者：张燕 ZHANG Yan(Economy and Management Department,Civil Aviation Management Institute of China,Beijing100102)

机构地区：[1]中国民航管理干部学院经济管理系

出　　处：《材料导报》2019年第A01期314-317,共4页Materials Reports

基　　金：民航安全能力建设项目资金(14000900100016J013)~~

摘　　要：一步法合成直径为250nm的无表面修饰剂花状金纳米颗粒。使用扫描电子显微镜、透射电子显微镜、选区电子衍射仪和X射线衍射仪对花状金纳米颗粒的结构和合成机理进行分析。用模型解释了花状金纳米颗粒形貌变化的动力学机理,模拟并预测了其生长机理。选用4-巯基苯甲酸(PMBA)为探针分子,探测出花状金纳米颗粒具有优越的表面增强拉曼散射性能(SERS),增强因子可高达7.5×105。鉴于独特性能,花状金纳米颗粒在未来各领域具有潜在的广泛应用。Au nanoflowers with diameter about 250 nm have been synthesized by a one-step method without surface modifier. There are many characteristic methods to be used to research the structure and formation mechanism of the Au nanoflowers, such as scanning and transmission electron microscopy ( SEM and TEM),selected area electron diffraction SAED analyses,and X-ray diffraction ( XRD). The growth mechanism has been well simulated and predicted by employing growth model to explain morphological evolution of kinetics mechanism. For testing p-mercapto benzoic acid ( PMBA) molecule,the Au nanoflowers have exhibited the high surface-enhanced R aman scattering activity,and the enhancement factor ( EF) can reach as high as 7.5×105 . In view of unique properties,the Au nanoflowers as high-performance SERS substrates appear to be very promising for applications.

关 键 词：一步法 花状金纳米材料 无表面修饰剂 表面增强拉曼散射 

分 类 号：TB304[一般工业技术—材料科学与工程]