AI Article Synopsis
- The study highlights the dangers posed by aromatic amines to human health and the environment, emphasizing the urgent need for quick and sensitive detection methods.
- It introduces a novel surface-enhanced Raman scattering (SERS) technique using gold nanostars-modified silver nanorods for detecting harmful substances like benzidine and 4-aminobiphenyl (4-ABP).
- The method demonstrates rapid detection capabilities with low detection limits and can be applied to real-world situations, such as testing river water samples in under 3 minutes, making it suitable for on-site environmental monitoring.
Article Abstract
The leakage of aromatic amines will pose a great threat to human health and the ecological environment. Therefore, there is an urgent need to achieve rapid and high-sensitivity detection of such substances. In this study, a simple surface-enhanced Raman scattering (SERS) method based on gold nanostars-modified silver nanorods (AuNSs@AgNRs) was established for the detection of benzidine and 4-aminobiphenyl (4-ABP). The enhancement factors of the substrate towards rhodamine 6G (R6G) and crystal violet (CV) were 4.67 × 10 and 1.11 × 10, respectively. Combined with density functional theory (DFT), the AuNSs@AgNR substrate achieved the rapid detection of benzidine and 4-ABP and obtained low detection limits (LOD = 7.09 × 10 M; LOD = 1.20 × 10 M). Furthermore, the AuNSs@AgNR substrate can realize the high-sensitivity detection of benzidine and 4-ABP in the spiked river water samples within 3 min, which means that the AuNSs@AgNR-based SERS method can be used as a portable platform to realize the on-site rapid detection of environmental pollutants.
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| http://dx.doi.org/10.1039/d2an01817a | DOI Listing |
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