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

ACS Applied Nano Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 13, 2025

Rapidly and accurately identifying ultratrace mercury ions (Hg2+) to protect people's lives 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 signals selectivity for trace Hg2+ detection. Due the strong coordination ability of form Au-SH bonds, 4-mercaptobenzoic acid (4-MBA) replaced adsorption 4-aminothiophenol (4-ATP), thereby creating a sandwich structure (Au/Hg2+/4-ATP). Moreover, sensor exhibits excellent anti-interference capabilities, high selectivity, rapid detection within 3 min, with wide linear range 10–3 10–11 M low limit 1.35 × 10–13 M. It has been successfully used detect in fish, offering reliable method on-site heavy metal monitoring mitigating mercury-related risks.

Язык: Английский

New Trends in SERS Substrates With Micro‐ and Nanostructures: Materials, Substrates, Preparation, and Applications

Battery energy, Год журнала: 2025, Номер unknown

Опубликована: Апрель 16, 2025

ABSTRACT Surface‐enhanced Raman scattering (SERS) is a frontier technology for high‐sensitivity analysis of molecules and chemical substances, useful tool in the sensing field relying on fingerprint recognition ability, high sensitivity, multiple detection, biocompatibility, so forth. SERS substrates have been well concerned attributed to their ability enhance signals, which makes them various applications, including detection. At same time, flexible enable sample loads meet requirements and, therefore, sensitivity but detection capacity still limited. In this paper, basic principle method were reviewed, some new trends micro‐ nanostructured reviewed from aspects material, matrix type, preparation, application.

Язык: Английский

Plasmon-activated water innovatively applicable for improving the performance of surface-enhanced Raman scattering

Talanta, Год журнала: 2025, Номер unknown, С. 128232 - 128232

Опубликована: Апрель 1, 2025

Язык: Английский