Silver nanoparticle-assembled micro-bowl arrays for sensitive SERS detection of pesticide residue.

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ID: 87579
2020
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Abstract
It is of great significance to develop a simple and effective method for constructing large-scale high-quality surface-enhanced Raman scattering (SERS) substrate. Here Ag nanoparticle-assembled micro-bowl array was prepared by a close-packed polystyrene (PS) sphere monolayer templated electrodeposition approach. The fabricated Ag nanoparticle-assembled micro-bowl array shows high SERS sensitivity to rhodamine 6G (R6G) under an ultralow concentration of 1 fM, and exhibits excellent SERS spectral uniformity with a small relative standard deviation (RSD) of 7.6% and good reproducibility (a RSD ~8.2% for the average peak intensities from different batches of SERS substrates). The fabricated micro-bowl array SERS substrate was employed to detect pesticide residue (thiram and methyl parathion) on vegetables. The limit of detections (LODs) for the two pesticides are lower than the maximum residue limits (MRLs) set by European Union respectively, showing promising application in rapid inspection of food safety.
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zhu2020silvernanotechnology Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Zhu, Chuhong;Zhao, Qiangsheng;Meng, Guowen;Wang, Xiujuan;Hu, Xiaoye;Han, Fangming;Lei, Yong;
Journal Nanotechnology
Year 2020
DOI
10.1088/1361-6528/ab7100
URL
Keywords
Silver nanoparticles micro/nanostructure array pesticide detection polystyrene sphere monolayer surface enhanced raman scattering

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