| 可循环表面增强拉曼光谱基底的制备及其应用 |
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| 作者姓名： | Ni DD Wang WW Yao JL Zhang XJ Gu RA |
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| 作者单位： | 苏州大学材料与化学化工学部,江苏,苏州,215123 |
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| 基金项目： | 国家自然科学基金项目(20773091,20973120)资助 |
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| 摘 要： | 以氨基硅烷为偶联剂,硅酸钠为硅源,合成了一种以金为核,二氧化硅为壳的核壳纳米粒子。通过调节硅酸钠的量,反应温度和反应时间控制二氧化硅壳层厚度,获得理想的表面增强效应。通过研究表面增强拉曼光谱(SERS)信号强度和二氧化硅层厚度之间的关系优化基底的制备条件。采用对巯基苯和联吡啶作为探针分子进行SERS实验,在一定浓度范围内得到SERS信号强度和浓度的对数之间的线性关系,实验结果表明此组装有Au@SiO2的ITO基底作为可循环利用基底可定量分析吸附物种的浓度。
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| 关 键 词： | Au@SiO2纳米粒子 表面增强拉曼光谱 基底 循环 定量分析 |
Fabrication of reproducible surface enhanced Raman scattering substrate and its application |
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| Ni DD,Wang WW,Yao JL,Zhang XJ,Gu RA.Fabrication of reproducible surface enhanced Raman scattering substrate and its application[J].Spectroscopy and Spectral Analysis,2011,31(2):394-397. |
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| Authors: | Ni Dan-Dan Wang Wei-Wei Yao Jian-Lin Zhang Xue-Jiao Gu Ren-Ao |
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| Institution: | NI Dan-dan,WANG Wei-wei,YAO Jian-lin,ZHANG Xue-jiao,GU Ren-ao College of Chemistry,Chemical Engineering and Material Science,Soochow University,Suzhou 215123,China |
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| Abstract: | Gold nanoparticles were homogeneously coated with silica using the silane coupling agent(3-aminopropyl)-trimethoxysilane to functionalize the gold surface and sodium silicate solution as the precursor of silica.The shell thickness could be well controlled by changing the amount of sodium silicate,reaction temperature and time.The Au@SiO2 core-shell nanoparticles with a suitable silica shell thickness exhibited optimal SERS activity and were self-assembled onto an ITO substrate in order to get a stable and r... |
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| Keywords: | Au@SiO2 nanoparticles Surface enhanced Raman spectroscopy Substrate Reproducibility Quantitative analysis |
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