Fabrication of Multifunctional SERS Platform Based on Ag NPs Self-Assembly Ag-AAO Nanoarray for Direct Determination of Pesticide Residues and Baicalein in Real Samples
| Autor: | Wenzhi Yuan, Zhibin Zhang, Wei Han, Jialin Ge, Congzhe Chen, Liyong Wang, Kuihua Li, Jianjun Gu, Shiqi Xu, Jungai Gu, Guochao Shi, Mingli Wang |
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| Rok vydání: | 2021 |
| Předmět: |
Detection limit
Reproducibility AAO Materials science Fabrication SERS Nanotechnology pesticide residue Surfaces and Interfaces Baicalein Engineering (General). Civil engineering (General) Rapid detection Surfaces Coatings and Films chemistry.chemical_compound symbols.namesake Ag nanopillar chemistry Materials Chemistry symbols Self-assembly TA1-2040 Raman spectroscopy Ag NPs Raman scattering |
| Zdroj: | Coatings, Vol 11, Iss 1054, p 1054 (2021) Coatings Volume 11 Issue 9 |
| ISSN: | 2079-6412 |
| DOI: | 10.3390/coatings11091054 |
| Popis: | Aiming at the shortcomings of high cost and time-consumption in traditional liquid chromatography, an effective surface enhanced Raman scattering (SERS)-based trace detection method has been proposed to quantitatively identify the active component of traditional Chinese medicine. In this paper, a high-performance and versatile SERS platform based on Ag nanoparticles (NPs) self-assembly Ag-anodized aluminium (Ag NPs-Ag-AAO) nanoarray was fabricated by controllable physico-chemical preparation technology. The results indicated that the electromagnetic field enhancement effect was sharply strengthened as Ag NPs assembled, and the experimental enhancement factor (EEF) value was calculated to be 1.0083 × 106. This novel Ag NPs-Ag-AAO nanoarray with substantial “hot spots” exhibited high SERS signal reproducibility, with the relative standard deviation (RSD) value at less than 2.23%. More importantly, this SERS platform was applied to detect active component Baicalein in Scutellaria baicalensis, and the limit of detection (LOD) was located at 10 fg/mL. Therefore, this Ag NPs-Ag-AAO nanoarray with high sensitivity, strong Raman signal reproducibility and reliable practicability has broad application prospects in the rapid detection of trace substances in the active components of traditional Chinese medicine and is expected to be popularized. |
| Databáze: | OpenAIRE |
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