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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(英文),2019,48(6):1791~1796.[Huang Jian,Ma Dayan and 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.]
A Simple Wet-Chemical Route for the Preparation of Silver Dendrites on Commercial Silicon Wafer and their Application in SERS DetectionS
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Received:January 11, 2018  Revised:March 20, 2018
DOI:
Key words: Silver dendrites  wet-chemical method  fabrication  SERS
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Author NameAffiliation
Huang Jian,Ma Dayan and Xu Kewei  
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Abstract:
      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.