One-Step Laser Nanostructuration of Reduced Graphene Oxide Films Embedding Metal Nanoparticles for Sensing Applications

dc.contributor.authorScroccarello A.
dc.contributor.authorAlvarez-Diduk R.
dc.contributor.authorDella Pelle F.
dc.contributor.authorde Carvalho Castro e Silva C.
dc.contributor.authorIdili A.
dc.contributor.authorParolo C.
dc.contributor.authorCompagnone D.
dc.contributor.authorMerkoci A.
dc.date.accessioned2024-03-12T19:10:11Z
dc.date.available2024-03-12T19:10:11Z
dc.date.issued2023
dc.description.abstract© 2023 The Authors. Published by American Chemical Society.The combination of two-dimensional materials and metal nanoparticles (MNPs) allows the fabrication of novel nanocomposites with unique physical/chemical properties exploitable in high-performance smart devices and biosensing strategies. Current methods to obtain graphene-based films decorated with noble MNPs are cumbersome, poorly reproducible, and difficult to scale up. Herein, we propose a straightforward, versatile, surfactant-free, and single-step technique to produce reduced graphene oxide (rGO) conductive films integrating “naked” noble MNPs. This method relies on the instantaneous laser-induced co-reduction of graphene oxide and metal cations, resulting in highly exfoliated rGO nanosheets embedding gold, silver, and platinum NPs. The production procedure has been optimized, and the obtained nanomaterials are fully characterized; the hybrid nanosheets have been easily transferred onto lab-made screen-printed electrodes preserving their nanoarchitecture. The Au@rGO-, Ag@rGO-, and Pt@rGO-based electrodes have been challenged to detect caffeic acid, nitrite, and hydrogen peroxide in model solutions and real samples. The sensors yielded quantitative responses (R2 ≥ 0.997) with sub-micromolar limits of detections (LODs ≤ 0.6 μM) for all the analytes, allowing accurate quantification in samples (recoveries ≥ 90%; RSD ≤ 14.8%, n = 3). This single-step protocol which requires low cost and minimal equipment will allow the fabrication of free-standing, MNP-embedded rGO films integrable into a variety of scalable smart devices and biosensors.
dc.description.firstpage598
dc.description.issuenumber2
dc.description.lastpage609
dc.description.volume8
dc.identifier.doi10.1021/acssensors.2c01782
dc.identifier.issn2379-3694
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/34107
dc.relation.ispartofACS Sensors
dc.rightsAcesso Aberto
dc.subject.otherlanguageelectrochemical sensor
dc.subject.otherlanguagehybrid nanomaterials
dc.subject.otherlanguageIR-laser
dc.subject.otherlanguagelaser reduced graphene oxide
dc.subject.otherlanguagemicropatterning
dc.subject.otherlanguagenanodecoration
dc.subject.otherlanguagesurfactant-free
dc.titleOne-Step Laser Nanostructuration of Reduced Graphene Oxide Films Embedding Metal Nanoparticles for Sensing Applications
dc.typeArtigo
local.scopus.citations18
local.scopus.eid2-s2.0-85147558329
local.scopus.subjectEmbeddings
local.scopus.subjectGraphene oxide films
local.scopus.subjectHybrid nanomaterials
local.scopus.subjectIR lasers
local.scopus.subjectLaser reduced graphene oxide
local.scopus.subjectMicro patterning
local.scopus.subjectNanodecoration
local.scopus.subjectReduced graphene oxides
local.scopus.subjectSmart devices
local.scopus.subjectSurfactant-free
local.scopus.subjectElectrochemical Techniques
local.scopus.subjectGold
local.scopus.subjectGraphite
local.scopus.subjectMetal Nanoparticles
local.scopus.updated2024-06-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85147558329&origin=inward
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