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Title: Core-shell structure DA-CDs/AuNPs for the recognition of fenamidone by surface-enhanced Raman scattering. Author: Li K, Li H, Zhang Q, Yang D, Yang Y. Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2024 Apr 05; 310():123865. PubMed ID: 38219613. Abstract: In this work, a facile synthesis method for dopamine carbon dots-based Au nanoparticles (DA-CDs/AuNPs) by seed gold method was reported as the surface enhanced Raman scattering (SERS) booster. DA-CDs with rich in surface functional groups was synthesized using dopamine, citric acid and ethylenediamine as precursors by a facile hydrothermal method, and can be used as the capping agents and reducing agents for the synthesis of DA-CDs/AuNPs. Due to the electromagnetic "hot spots" effect, DA-CDs/AuNPs with core-shell structure exhibited strong SERS activity. Based on the specific interaction of DA-CDs/AuNPs and fenamidone, a detection method of fenamidone was established with a low detection limit of 0.05 μg/mL. Finally, the SERS sensor was successfully applied to the detection of fenamidone in fruit with recoveries between 90.6 % and 98.7 %. The method here proposed can be reliably applied for fenamidone detection on fruits.[Abstract] [Full Text] [Related] [New Search]