Freestanding laser-induced two dimensional heterostructures for self-contained paper-based sensors
Della Pelle, Flavio (Institut Català de Nanociència i Nanotecnologia)
Bukhari, Qurat Ul Ain (Institut Català de Nanociència i Nanotecnologia)
Álvarez Diduk, Ruslan (Institut Català de Nanociència i Nanotecnologia)
Scroccarello, Annalisa (Università di Teramo. Dipartimento di Bioscienze e Tecnologie per gli Alimenti, l'Agricoltura e l'Ambiente)
Compagnone, Dario (Università di Teramo. Dipartimento di Bioscienze e Tecnologie per gli Alimenti, l'Agricoltura e l'Ambiente)
Merkoçi, Arben (Institut Català de Nanociència i Nanotecnologia)

Data:	2023
Resum:	The production of 2D/2D heterostructures (HTs) with favorable electrochemical features is challenging, particularly for semiconductor transition metal dichalcogenides (TMDs). In this studies, we introduce a CO laser plotter-based technology for the realization of HT films comprising reduced graphene oxide (rGO) and 2D-TMDs (MoS, WS, MoSe, and WSe) produced via water phase exfoliation. The strategy relies on the Laser-Induced production of HeterosTructures (LIHTs), where after irradiation the nanomaterials exhibit changes in the morphological and chemical structure, becoming conductive easily transferable nanostructured films. The LIHTs were characterized in detail by SEM, XPS, Raman and electrochemical analysis. The laser treatment induces the conversion of GO into conductive highly exfoliated rGO decorated with homogeneously distributed small TMD/TM-oxide nanoflakes. The freestanding LIHT films obtained were employed to build self-contained sensors onto nitrocellulose, where the HT works both as a transducer and sensing surface. The proposed nitrocellulose-sensor manufacturing process is semi-automated and reproducible, multiple HT films may be produced in the same laser treatment and the stencil-printing allows customizable design. Excellent performance in the electroanalytical detection of different molecules such as dopamine (a neurotransmitter), catechin (a flavonol), and hydrogen peroxide was demonstrated, obtaining nanomolar limits of detection and satisfactory recovery rates in biological and agrifood samples, together with high fouling resistance. Considering the robust and rapid laser-induced production of HTs and the versatility of scribing desired patterns, the proposed approach appears as a disruptive technology for the development of electrochemical devices through sustainable and accessible strategies.
Ajuts:	European Commission 881603 Agencia Estatal de Investigación SEV-2017-0706 Agencia Estatal de Investigación PID2021-124795NB-I00
Nota:	Altres ajuts: CERCA Programme/Generalitat de Catalunya
Drets:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	CO 2 laser ; Dichalcogenides ; Electrochemical features ; Laser induced ; Laser treatment ; Laser-induced production ; Reduced graphene oxides ; Semiconductor transition ; Two-dimensional ; Water phasis
Publicat a:	Nanoscale, Vol. 15, Issue 15 (April 2023) , p. 7164-7175, ISSN 2040-3372

DOI: 10.1039/d2nr07157f

Postprint 15 p, 1.4 MB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Institut Català de Nanociència i Nanotecnologia (ICN2)
Articles > Articles de recerca
Articles > Articles publicats