Highly sensitive SERS detection of melamine based on 3D Ag@porous silicon photonic crystal.

IF 5.6 1区化学 Q1 CHEMISTRY, ANALYTICAL Talanta Pub Date : 2024-12-01 Epub Date: 2024-08-29 DOI:10.1016/j.talanta.2024.126789

Wei Li, Shijie Dai, Xiang Li, Qianjin Li, Jianlin Li

引用次数: 0

Abstract

The stability, reproducibility and engineering of SERS substrate faces a great challenge in melamine SERS assay. In this work, a simple, highly sensitive, stable and cost-efficient SERS detection platform for melamine was established based on its Raman fingerprints spectrum. The Ag@ porous silicon photonic crystal (Ag@PPC) was prepared as the 3D SERS substrate by electrochemical etching and magnetron sputter technology. The main influence factors for the preparation of SERS substrate were investigated in detail. The analytical enhancement factor of the 3D SERS substrate can reach to 2.6 × 10⁸. The 3D SERS detection platform showed a wide linear detection range of 10^-4∼10 mg L^-1 and a low limit of detection of 0.1 μg L^-1 for melamine. Moreover, such detection platform showed good stability, high reproducibility and high recovery rates for melamine. The 3D Ag@PPC SERS substrate can be easily prepared and engineered, displaying a great potential application in food safety field.

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基于三维 Ag@ 多孔硅光子晶体的三聚氰胺高灵敏 SERS 检测。

在三聚氰胺 SERS 检测中，SERS 底物的稳定性、可重复性和工程化是一个巨大的挑战。本研究基于三聚氰胺的拉曼指纹谱，建立了一种简便、高灵敏度、高稳定性和低成本的三聚氰胺SERS检测平台。通过电化学刻蚀和磁控溅射技术制备了Ag@多孔硅光子晶体（Ag@PPC）作为三维SERS基底。详细研究了制备 SERS 基底的主要影响因素。三维 SERS 基底的分析增强因子可达 2.6 × 108。三维 SERS 检测平台对三聚氰胺的线性检测范围为 10-4∼10 mg L-1，检测限低至 0.1 μg L-1。此外，这种检测平台具有良好的稳定性、高重现性和三聚氰胺的高回收率。三维 Ag@PPC SERS 底物易于制备和工程化，在食品安全领域具有巨大的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Talanta 化学-分析化学

CiteScore

12.30

自引率

4.90%

发文量

861

审稿时长

29 days

期刊介绍： Talanta provides a forum for the publication of original research papers, short communications, and critical reviews in all branches of pure and applied analytical chemistry. Papers are evaluated based on established guidelines, including the fundamental nature of the study, scientific novelty, substantial improvement or advantage over existing technology or methods, and demonstrated analytical applicability. Original research papers on fundamental studies, and on novel sensor and instrumentation developments, are encouraged. Novel or improved applications in areas such as clinical and biological chemistry, environmental analysis, geochemistry, materials science and engineering, and analytical platforms for omics development are welcome. Analytical performance of methods should be determined, including interference and matrix effects, and methods should be validated by comparison with a standard method, or analysis of a certified reference material. Simple spiking recoveries may not be sufficient. The developed method should especially comprise information on selectivity, sensitivity, detection limits, accuracy, and reliability. However, applying official validation or robustness studies to a routine method or technique does not necessarily constitute novelty. Proper statistical treatment of the data should be provided. Relevant literature should be cited, including related publications by the authors, and authors should discuss how their proposed methodology compares with previously reported methods.