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Single-Stroke Metal Nanoparticle Laser Scribing on Cellulosic Substrates for Colorimetric Paper-Based Device Development
journal contributionposted on 2024-02-13, 07:16 authored by Annalisa Scroccarello, Flavio Della Pelle, Tiziano Di Giulio, Elisabetta Mazzotta, Cosimino Malitesta, Dario Compagnone
A straightforward CO2 laser-plotter-based technique to obtain different types of metal nanoparticles on paper is presented. This strategy allows the instantaneous laser-induced generation of metal nanoparticles (LIMs) anchored onto cellulosic substrates with micrometric resolution and customizable patterns; Au, Ag, Pt, Ni, and Cu LIMs have been obtained. LIM features were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. LIMs are plasmonic-active and characterized by colorimetric features consistent with nanostructure chemistry and density. Arrays of LIMs were assembled in two paper-based formats: (i) a nanocatalytic multimetal comb-shaped device to prove LIMs’ remediation ability for the switch-off of organic dyes and (ii) a paper-based nano colorimetric LIM array challenged for peracetic acid (PAA) vapor sensing, useful in the area of environmental sanitization. LIM nanochemistry allows (i) rapid (<1 min) organic dye catalytic conversion and (ii) sensitive PAA detection (LOD ≤ 0.3 μg mL–1) capable of discriminating PAA exposure levels from 0.5 to 60 mg m–3. LIM-based devices returned reproducible data (RSD ≤ 15%, n = 3). Summing up, the proposed strategy is particularly prone to generate catalytic/sensing zones in tailored paper-based devices, resulting in a new sustainable nanopatterning technique appealing in the (bio)sensing and nanochemistry fields.
scanning electron microscopyobtain different typesnanocatalytic multimetal comb3 μg mlbio ) sensingsensitive paa detectionray photoelectron spectroscopylod ≤ 0colorimetric features consistentbased device development2 sublim nanochemistry allowsray spectroscopystrategy allowsshaped devicenanochemistry fieldsn lim features3 ).vapor sensingsensing zonescolorimetric paperbased techniquebased formatsbased devicesstraightforward coproposed strategyperacetic acidparticularly proneorganic dyesnanostructure chemistrymicrometric resolutionmetal nanoparticlesinduced generationgenerate catalyticenvironmental sanitizationcustomizable patternscellulosic substrates60 mg