Issue 18, 2025

A gold–silver nanostar 2D array composite structure for rapid SERS determination of PAHs

Abstract

This study developed a portable multi-ring aromatic hydrocarbon (PAH) detection tool using a dual-metal surface-enhanced Raman scattering (SERS) substrate. Gold–silver nanostars (AuNS@Ag) were synthesized by a secondary seed-mediated growth method and assembled into a two-dimensional array by a liquid-phase interface self-assembly method, uniformly deposited on a silicon wafer. The PAHs in water samples were identified using a portable Raman spectrometer. The SERS detection platform has high sensitivity and stability, and can detect pyrene and phenanthrene with concentrations of 10–8 M and 0.5 × 10−8 M, respectively. The stable dual-metal nanomaterial AuNS@Ag 2D array has potential application prospects and can be used for environmental monitoring.

Graphical abstract: A gold–silver nanostar 2D array composite structure for rapid SERS determination of PAHs

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Article information

Article type
Paper
Submitted
20 Feb 2025
Accepted
14 Apr 2025
First published
16 Apr 2025

Anal. Methods, 2025,17, 3825-3835

A gold–silver nanostar 2D array composite structure for rapid SERS determination of PAHs

H. Xing, T. Chen, Y. Qian, Q. Huang, T. We, X. Hu, J. Zhao and B. Wang, Anal. Methods, 2025, 17, 3825 DOI: 10.1039/D5AY00285K

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