黄剑,马大衍,徐可为.硅基银枝晶的湿化学法制备及其在SERS检测中的应用[J].稀有金属材料与工程,2019,48(6):1791~1796.[Huang Jian,Ma Dayan,Xu Kewei.A Simple Wet-Chemical Route for the Preparation of Silver Dendrites on Commercial Silicon Wafer and their Application in SERS DetectionS[J].Rare Metal Materials and Engineering,2019,48(6):1791~1796.]
硅基银枝晶的湿化学法制备及其在SERS检测中的应用
投稿时间:2018-01-11  修订日期:2018-03-20
中文关键词:  银枝晶  湿化学法  制备  SERS
基金项目:
中文摘要:
      设计并构建结构多样的银枝晶一直被认为是一种实现表面增强拉曼散射(SERS)信号放大的合理途径。本文报道了一种简单的湿化学方法,通过快速混合硝酸银和氢氟酸水溶液,进而实现了硅片表面高密度银枝晶的快速制备。由于Si-H表面具有一定的弱还原性,随后导致了银离子的还原,并最终形成了具有良好SERS增强特性的银枝晶结构。该方法生产速率快,重现性好,产率高,其尺寸通常为微米级,且枝晶表面无任何有机污染物。EDS分析进一步证实了所制备的枝晶结构为单质银属性。此外,详尽的研究表明所制备的银枝晶结构其形貌与具体的反应参数如氢氟酸浓度、硝酸银浓度以及反应时间等息息相关。重要的是,该枝晶结构成功实现了苏丹I、苏丹II和苏丹III的快速分析检测,展现出良好的应用前景。
A Simple Wet-Chemical Route for the Preparation of Silver Dendrites on Commercial Silicon Wafer and their Application in SERS DetectionS
英文关键词:Silver dendrites  wet-chemical method  fabrication  SERS
英文摘要:
      Design and preparation of various rational silver micro-nanostructures has been recognized as a promising solution for the Surface-enhanced Raman scattering (SERS) signal amplification. Here, a simple wet-chemical method was reported for the synthesis of high-density Ag dendrites structures on silicon wafer by rapidly mixing silver nitrate and hydrofluoric acid aqueous solutions. The reductive Si-H surfaces is oxidized while silver ions are reduced, yielding a final Ag dendrites structure that offers an excellent SERS enhancement. The EDS measurements confirmed the metallic nature of the formed Ag dendrites. Researches also show that the pure and low-cost Ag dendrites were about several micrometers in size and can be rapidly and reproducibly produced in high yield. Importantly, there were no organic contaminants were detected on the surface of the resulting dendrites structure. Additionally, the influence of experimental parameters on the morphology of dendrites was also been investigated, such as hydrofluoric acid concentration, silver nitrate concentration, and the reaction time. Importantly, the fabricated Ag dendrites substrates can be used for accurate and reliable determination of Sudan I, Sudan II, and Sudan III, which indicate that they could have a good future for implementation.
作者单位E-mail
黄剑 西安石油大学化学化工学院 huangjian1290@163.com 
马大衍 State Key Laboratory for Mechanical Behavior of Material,Xi’an Jiaotong University,Xi’an  
徐可为 State Key Laboratory for Mechanical Behavior of Material,Xi’an Jiaotong University,Xi’an  
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