Ag nanoparticles modified Cu/Cu(OH)2 film enables sensitive SERS detection via Coffee ring effect

Ag nanoparticles modified Cu/Cu(OH)2 film enables sensitive SERS detection via Coffee ring effect
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Ag 纳米粒子修饰的 Cu/Cu(OH)2 薄膜可通过咖啡环效应实现灵敏的 SERS 检测

DOI:
10.1088/2053-1591/ac2a5f
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发表时间:
2021
影响因子:
2.3
通讯作者:
Yanhua Teng
Yanhua Teng
中科院分区:
材料科学4区
文献类型:
--
作者:
Changguo Xue;Xingyu Qi;Liang Shen;Atian Xie;Yanhua Teng

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基于咖啡环效应,采用溶液浸泡和硬脂酸修饰的方法在具有纳米棒结构的超疏水铜/氢氧化铜表面沉积了银纳米粒子,并研究了其对痕量有机染料的表面增强拉曼散射(SERS)性能。结果表明,超疏水基质具有较好的增强效果。AgNPs/Cu/Cu(OH)2复合薄膜的混杂层次结构对增强耦合电磁场有积极的作用。该方法为监测有机化学污染物提供了一种简单的替代方法,该方法需要多步骤的制备过程和昂贵的模板。
In this work, based on the coffee ring effect, silver nanoparticles (AgNPs) were deposited on a superhydrophobic Cu/Cu(OH)2 substrate with nanorod structure prepared by solution-immersion and stearic acid modification, and its surface-enhanced Raman scattering (SERS) performance for the detection of trace organic dye was studied. The results show that the superhydrophobic substrate has a better enhancement efficiency. The hybrid hierarchical structure of the AgNPs/Cu/Cu(OH)2 composite film shows a positive effect on the enhanced coupling electromagnetic field. This method provides a simple alternative for monitoring organic chemical pollutants with multi-step fabrication processes and expensive templates.
界面电荷转移跃迁揭示的表面增强拉曼散射。
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