三维树枝状银薄膜的可控生长及其在表面增强拉曼光谱中的应用
3D Silver Dendritic Thin Film: Controllable Growth and Application in Surface Enhanced Raman Spectroscopy
作者单位E-mail
张慧娟 中北大学功能纳米复合材料山西省重点实验室, 太原 030051  
张东杰 中北大学功能纳米复合材料山西省重点实验室, 太原 030051  
张丛筠 中北大学功能纳米复合材料山西省重点实验室, 太原 030051 z.congyun@nuc.edu.c 
刘亚青 中北大学功能纳米复合材料山西省重点实验室, 太原 030051 lyq@nuc.edu.cn 
摘要: 通过电流置换反应制备了树枝状银纳米薄膜。在反应过程中通过控制反应时间和硝酸银的浓度,得到了不同形貌、分布和密度的树枝状银薄膜,从而得到了具有不同SERS性能的树枝状银纳米薄膜。选取了具有最佳SERS性能的树枝状银纳米薄膜对罗丹明6G进行了微量检测、再现性检测和稳定性检测,其检测限可达到1×10-11 mol·L-1,具有优良的再现性和良好的稳定性。
关键词: 银树枝状膜  表面增强拉曼散射  电流置换反应
基金项目: 山西省青年科学家自然科学基金(No.2015021078)和中国山西省科学技术项目国际合作(No.201603D421030)资助项目。
Abstract: A novel surface enhanced Raman spectroscopy (SERS) substrate was fabricated via a simple galvanic displacement reaction, where large scale of silver dendritic were uniformly and symmetrically formed on anodic aluminum oxide (AAO) membrane. The morphology, distribution and density of these silver dendritic films could be tuned easily just by controlling the reaction time as well as the concentration of AgNO3. Such active SERS substrate exhibits extremely high sensitivity, excellent reproducibility and good stability. Raman signal sensitivity for rhodamine 6G (R6G) was tested as low as 1×10-11 mol·L-1. Additionally, the as-synthesized robust substrate displays good stability under an ambient condition for several months. This 3D eco-friendly AAO membrane based substrate provides not only high density of SERS hot spots, but also a very large area for capturing target analytes. It has potential applications for the detection of trace organic contaminants in the environment.
Keywords: silver dendritic films  SERS  galvanic displacement reaction
投稿时间:2017-11-28 修订日期:2018-01-10
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张慧娟,张东杰,张丛筠,刘亚青.三维树枝状银薄膜的可控生长及其在表面增强拉曼光谱中的应用[J].无机化学学报,2018,34(3):597-604.
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