SERS-active substrates using DVD-R coated in silver thin films: A preliminary study for detection of commercial glyphosate
[Display omitted] •Alternative detection methods are required to reduce the harmful effects of GLP.•In SERS research, DVD-R nanopatterning substrates allow cost-efficient production.•Low concentrations of GLP can be detected using DVD-R@AgNPs substrate.•A novel method for SERS research employs AgNPs...
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Published in | Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 302; p. 123017 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
England
Elsevier B.V
05.12.2023
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Subjects | |
Online Access | Get full text |
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Summary: | [Display omitted]
•Alternative detection methods are required to reduce the harmful effects of GLP.•In SERS research, DVD-R nanopatterning substrates allow cost-efficient production.•Low concentrations of GLP can be detected using DVD-R@AgNPs substrate.•A novel method for SERS research employs AgNPs deposition via the CCPD technique.
Glyphosate (GLP) is the herbicide with the highest level of global commercialization and historical use. Even though numerous studies have found this substance to be harmless, current research demonstrates that GLP might affect human health. For this reason, researcher efforts are concentrating on alternatives for analytical quantification, such as Surface Enhanced Raman Spectroscopy (SERS). In this work, a DVD-R@AgNPs SERS substrate was produced by the Cathodic Cage Plasma Deposition (CCPD) technique, which allowed a thin film layer deposition of silver nanoparticles (AgNPs) on the PC grating structure from Digital Video/Versatile Disc Recordable (DVD-R). Scanning Electron Microscopy with energy-dispersive X-ray spectroscopy was used to characterize the substrate and chemical changes on the surface after AgNPs deposition. The DVD-R@AgNPs substrate was used to detect standard crystal violet (CV), GLP, and RoundupTM GLP (GLP-RU) using Raman Spectroscopy. The CV was used as a control sample for SERS measurement, allowing the calculation of the substrate enhancement factor, which was in the order of ∼ 105. To evaluate the efficiency of the SERS substrate, the limit of detection was calculated and showed values of ∼ 10-10 mol/L for CV, 10-7 and 10-8 mol/L for GLP, and 10-6 mol/L for GLP-RU. Thus, the DVD-R@AgNPs SERS sensor is a low-cost substrate that analyzes traces of pesticides such as commercial GLP, demonstrating high SERS sensitivities and many applications. |
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ISSN: | 1386-1425 1873-3557 |
DOI: | 10.1016/j.saa.2023.123017 |