In situ synthesis of SERS-active Au@POM nanostructures in a microfluidic device for real-time detection of water pollutants

Lafuente, Marta; Pellejero, Ismael; Clemente, Alberto; Urbiztondo, Miguel A.; Mallada, Reyes; Reinoso, Santiago; Pina, María del Pilar; Gandía Pascual, Luis

Publication:
In situ synthesis of SERS-active Au@POM nanostructures in a microfluidic device for real-time detection of water pollutants

dc.contributor.author	Lafuente, Marta
dc.contributor.author	Pellejero, Ismael
dc.contributor.author	Clemente, Alberto
dc.contributor.author	Urbiztondo, Miguel A.
dc.contributor.author	Mallada, Reyes
dc.contributor.author	Reinoso, Santiago
dc.contributor.author	Pina, María del Pilar
dc.contributor.author	Gandía Pascual, Luis
dc.contributor.department	Institute for Advanced Materials and Mathematics - INAMAT2	en
dc.contributor.funder	Gobierno de Navarra / Nafarroako Gobernua	es
dc.contributor.funder	Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa	es
dc.date.accessioned	2020-11-27T08:45:54Z
dc.date.available	2021-07-09T23:00:15Z
dc.date.issued	2020
dc.description.abstract	We present a simple, versatile and low-cost approach for the preparation of 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 PDMS microchannels without any extra functionalization procedure. The fabricated LoCs were characterized by SEM, UV-Vis, Raman, XRD and 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 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.	en
dc.description.sponsorship	Financial support from Gobierno de Navarra (grants PC025-026 and PC052-053) and MINECO (grant CTQ2016-79419-R) is gratefully acknowledged. I.P. and S.R. thank Obra Social la Caixa, Fundacion Caja Navarra, and UPNA for their research contracts in the framework of the programs 'Ayudas Postdoctorales' and 'Captacion del Talento'.	en
dc.embargo.lift	2021-07-09
dc.embargo.terms	2021-07-09
dc.format.extent	34 p.
dc.format.mimetype	application/pdf	en
dc.identifier.doi	10.1021/acsami.0c06725
dc.identifier.issn	1944-8252 (Electronic)
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/38794
dc.language.iso	eng	en
dc.publisher	ACS	en
dc.relation.ispartof	Applied Materials & Interfaces, 2020, 12, 36458-36467	en
dc.relation.projectID	info:eu-repo/grantAgreement/ES/1PE/CTQ2016-79419-R	en
dc.relation.publisherversion	https://doi.org/10.1021/acsami.0c06725
dc.rights	© 2020 American Chemical Society	en
dc.rights.accessRights	info:eu-repo/semantics/openAccess	en
dc.rights.accessRights	Acceso abierto / Sarbide irekia	es
dc.subject	Large SERS-active area	en
dc.subject	Spatial uniformity of SERS response	en
dc.subject	Charge transfer mechanism	en
dc.subject	POM assisted interactions	en
dc.subject	Organophosphorous pesticides	en
dc.subject	Chip reusability	en
dc.title	In situ synthesis of SERS-active Au@POM nanostructures in a microfluidic device for real-time detection of water pollutants	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/acceptedVersion	en
dc.type.version	Versión aceptada / Onetsi den bertsioa	es
dspace.entity.type	Publication
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