SERS-active substrates using DVD-R coated in silver thin films: A preliminary study for detection of commercial glyphosate

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dc.contributor.authorMurcia-Correa, Luz Stefany
dc.contributor.authorUsuriaga, Omar
dc.contributor.authorVieira, Lucia
dc.contributor.authorRaniero, Leandro José
dc.date.accessioned2025-02-27T14:34:17Z
dc.date.available2025-02-27T14:34:17Z
dc.date.issued22023
dc.description.abstractGlyphosate (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.
dc.description.physical9 p.
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.uriCAPES (88887.342124/2019-00) CNPq (Proj. 302158/2022-7) FAPESP (2019/18572-7)
dc.format.mimetypePDF
dc.identifier.affiliationUniversidade do Vale do Paraíba
dc.identifier.affiliationUniversity of São Paulo
dc.identifier.bibliographicCitationMURCIA-CORREA, Luz Stefany et al. SERS-active substrates using DVD-R coated in silver thin films: A preliminary study for detection of commercial glyphosate. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, v. 302, p. 1-9, 2023. Disponível em:https://linkinghub.elsevier.com/retrieve/pii/S1386142523007023.
dc.identifier.doi10.1016/j.saa.2023.123017
dc.identifier.urihttps://repositorio.univap.br/handle/123456789/605
dc.language.isoen_US
dc.publisherElsevier
dc.rights.holderElsevier
dc.subject.keywordNanopatterning
dc.subject.keywordGLP
dc.subject.keywordGlyphosate
dc.titleSERS-active substrates using DVD-R coated in silver thin films: A preliminary study for detection of commercial glyphosate
dc.typeArtigos de Periódicos

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