High-Performance Fiber Optic SERS Platform Based on Self-assembly AuNPs on Silver Dendrite Nanostructures Using Laser-Assisted Plasmon-Mediated Method for Toxic Pesticide Detection

IF 3.3 4区物理与天体物理 Q2 CHEMISTRY, PHYSICAL

Plasmonics Pub Date : 2024-07-13 DOI:10.1007/s11468-024-02423-0

Pham Thanh Binh, Pham Van Hai, Hoang Thi Hong Cam, Nguyen Thuy Van, Nguyen Van Chuc, Bui Huy, Vu Duc Chinh, Pham Van Hoi

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引用次数: 0

Abstract

In this study, we present the fabrication and demonstrate the high performance of a fiber optic surface-enhanced Raman scattering (SERS) platform featuring self-assembled gold nanoparticles (AuNPs) on silver dendrite nanostructures (AgD nanostructures) using a laser-assisted plasmon-mediated method. The uniform distribution of AuNPs on AgD nanostructures resulted in exceptional Raman intensity enhancement, with analytical enhancement factors estimated at 3.37 × 10⁷ for Rhodamine 6G (R6G) and a consistent SERS signal with an excellent relative standard deviation (RSD) value of 4.8%. Additionally, the stability of this substrate was evaluated over different time intervals, with SERS data for a 1-µM R6G solution collected over 14 days. The substrate’s potential was further explored by detecting two toxic pesticides, Chlorpyrifos and Chlordane, with estimated detection limits of 1.24 ppb and 1.64 ppb, respectively. Consequently, the proposed fiber optic SERS platform shows significant potential for detecting Chlorpyrifos and Chlordane in the environment.

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基于银树枝状纳米结构上自组装 AuNPs 的高性能光纤 SERS 平台，采用激光辅助质子介导法检测有毒农药

在本研究中，我们介绍了一种光纤表面增强拉曼散射（SERS）平台，该平台采用激光辅助等离子体介导的方法，在银树枝状纳米结构（AgD 纳米结构）上自组装了金纳米粒子（AuNPs），并演示了该平台的高性能。AuNPs 在 AgD 纳米结构上的均匀分布带来了卓越的拉曼强度增强效果，罗丹明 6G（R6G）的分析增强因子估计为 3.37 × 107，SERS 信号稳定，相对标准偏差 (RSD) 值为 4.8%。此外，还评估了这种底物在不同时间间隔内的稳定性，收集了 1-µM R6G 溶液 14 天的 SERS 数据。通过检测两种有毒农药--毒死蜱和氯丹，进一步探索了这种基底的潜力，估计检测限分别为 1.24 ppb 和 1.64 ppb。因此，拟议的光纤 SERS 平台在检测环境中的毒死蜱和氯丹方面显示出巨大的潜力。

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来源期刊

Plasmonics 工程技术-材料科学：综合

CiteScore

5.90

自引率

6.70%

发文量

164

审稿时长

2.1 months

期刊介绍： Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons. Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.