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

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英文篇名：Gold Nanoflower Without Surface Modifier Prepared by One-step Method and Its Surface-Enhanced Raman Scattering Property 作者：张燕 英文作者：ZHANG Yan;Economy and Management Department, Civil Aviation Management Institute of China; 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 英文关键词：one-step method;;Au nanoflowers;;without surface modifier;;surface enhanced raman scattering 中文刊名：CLDB 英文刊名：Materials Reports 机构：中国民航管理干部学院经济管理系; 出版日期：2019-05-25 出版单位：材料导报 年：2019 期：v.33 基金：民航安全能力建设项目资金(14000900100016J013)~~ 语种：中文; 页：CLDB2019S1068 页数：4 CN：S1 ISSN：50-1078/TB 分类号：323-326

摘要

一步法合成直径为250 nm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7.5×10~5。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 characte-ristic 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 Raman scattering activity, and the enhancement factor(EF) can reach as high as 7.5×10~5. In view of unique properties, the Au nanoflowers as high-performance SERS substrates appear to be very promising for applications.

引文

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