106632 20220111135614.0 doi 10.1021/acsami.0c06725 sideral 119899 ART-2020-119899 eng Lafuente, M. Universidad de Zaragoza (orcid)0000-0003-2660-3726 In Situ Synthesis of SERS-Active Au@POM Nanostructures in a Microfluidic Device for Real-Time Detection of Water Pollutants 2020 Access copy available to the general public Unrestricted We present a simple, versatile, and low-cost approach for the preparation of surface-enhanced Raman spectroscopy (SERS)-active regions within a microfluidic channel 50 cm in length. The approach involves the UV-light-driven formation of polyoxometalate-decorated gold nanostructures, Au@POM (POM: H3PW12O40 (PW) and H3PMo12O40 (PMo)), that self-assemble in situ on the surface of the polydimethylsiloxane (PDMS) microchannels without any extra functionalization procedure. The fabricated LoCs were characterized by scanning electron microscopy (SEM), UV-vis, Raman, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) techniques. The SERS activity of the resulting Au@POM-coated lab-on-a-chip (LoC) devices was evaluated in both static and flow conditions using rhodamine R6G. The SERS response of Au@PW-based LoCs was found to be superior to Au@PMo counterparts and outstanding when compared to reported data on metal@POM nanocomposites. We demonstrate the potentialities of both Au@POM-coated LoCs as analytical platforms for real-time detection of the organophosphorous pesticide paraoxon-methyl at 10-6 M concentration level. info:eu-repo/grantAgreement/ES/MINECO/CTQ2016-79419-R info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 9.229 2020 NANOSCIENCE & NANOTECHNOLOGY 21 / 106 = 0.198 2020 Q1 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 44 / 333 = 0.132 2020 Q1 T1 2.535 2020 Materials Science (miscellaneous) 2020 Q1 Nanoscience and Nanotechnology 2020 Q1 Medicine (miscellaneous) 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Pellejero, I. Clemente, A. (orcid)0000-0002-8787-117X Urbiztondo, M.A. (orcid)0000-0002-4931-1358 Mallada, R. Universidad de Zaragoza (orcid)0000-0002-4758-9380 Reinoso, S. Pina, M.P. Universidad de Zaragoza (orcid)0000-0001-9897-6527 Gandía, L.M. 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 12, 32 (2020), 36458-36467 ACS appl. mater. interfaces ACS Applied Materials and Interfaces 1944-8244 644151 http://zaguan.unizar.es/record/106632/files/texto_completo.pdf Postprint 1737104 http://zaguan.unizar.es/record/106632/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:106632 articulos driver 2022-01-11-13:53:28 ARTICLE