Dual-Probe SERS Chip: A Rapid and Ratiometric Detection of Trace Hg2+ in Food Samples

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Nano Materials Pub Date : 2025-03-13 DOI:10.1021/acsanm.5c0050210.1021/acsanm.5c00502

Yuqi Wan, Jingkun Li, Guoyong Jiang, Junjie Qi and Fuwei Pi*,

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Abstract

Rapidly and accurately identifying ultratrace mercury ions (Hg²⁺) to protect people’s lives and health is still challenging work. A dual-probe ratiometric SERS chip was developed by growing spiderweb-like Au nanowires (AuNWs) on an AuNP array, enhancing SERS signals and selectivity for trace Hg²⁺ detection. Due to the strong coordination ability of Hg²⁺ to form Au-SH bonds, 4-mercaptobenzoic acid (4-MBA) was replaced by the adsorption of 4-aminothiophenol (4-ATP), thereby creating a sandwich structure (Au/Hg²⁺/4-ATP). Moreover, the sensor exhibits excellent anti-interference capabilities, high selectivity, and rapid detection within 3 min, with a wide linear detection range of 10^–3 to 10^–11 M and a low detection limit of 1.35 × 10^–13 M. It has been successfully used to detect Hg²⁺ in fish, offering a rapid and reliable method for on-site heavy metal monitoring and mitigating mercury-related risks.

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来源期刊

ACS Applied Nano Materials Multiple-

CiteScore

8.30

自引率

3.40%

发文量

1601

期刊介绍： ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.