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Extending the Colloidal Transition Metal Dichalcogenide Library to ReS2 Nanosheets for Application in Gas Sensing and Electrocatalysis.

Authors
  • Martín-García, Beatriz1, 2
  • Spirito, Davide3
  • Bellani, Sebastiano1
  • Prato, Mirko4
  • Romano, Valentino1, 5
  • Polovitsyn, Anatolii2, 6
  • Brescia, Rosaria7
  • Oropesa-Nuñez, Reinier8
  • Najafi, Leyla1
  • Ansaldo, Alberto1
  • D'Angelo, Giovanna5
  • Pellegrini, Vittorio1, 8
  • Krahne, Roman3
  • Moreels, Iwan2, 6
  • Bonaccorso, Francesco1, 8
  • 1 Graphene Labs, Istituto Italiano di Tecnologia, via Morego 30, 16163, Genova, Italy. , (Italy)
  • 2 Nanochemistry Department, Istituto Italiano di Tecnologia, via Morego 30, 16163, Genova, Italy. , (Italy)
  • 3 Optoelectronics Group, Istituto Italiano di Tecnologia, via Morego 30, 16163, Genova, Italy. , (Italy)
  • 4 Materials Characterization Facility, Istituto Italiano di Tecnologia, via Morego 30, 16163, Genova, Italy. , (Italy)
  • 5 Dipartimento di Scienze Matematiche ed Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale F. Stagno d'Alcontres 31, S. Agata, 98166, Messina, Italy. , (Italy)
  • 6 Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000, Gent, Belgium. , (Belgium)
  • 7 Electron Microscopy Facility, Istituto Italiano di Tecnologia, via Morego 30, 16163, Genova, Italy. , (Italy)
  • 8 BeDimensional Spa., Via Albisola 121, 16163, Genova, Italy. , (Italy)
Type
Published Article
Journal
Small
Publisher
Wiley (John Wiley & Sons)
Publication Date
Dec 01, 2019
Volume
15
Issue
52
Identifiers
DOI: 10.1002/smll.201904670
PMID: 31788951
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Among the large family of transition metal dichalcogenides, recently ReS2 has stood out due to its nearly layer-independent optoelectronic and physicochemical properties related to its 1T distorted octahedral structure. This structure leads to strong in-plane anisotropy, and the presence of active sites at its surface makes ReS2 interesting for gas sensing and catalysts applications. However, current fabrication methods use chemical or physical vapor deposition (CVD or PVD) processes that are costly, time-consuming and complex, therefore limiting its large-scale production and exploitation. To address this issue, a colloidal synthesis approach is developed, which allows the production of ReS2 at temperatures below 360 °C and with reaction times shorter than 2h. By combining the solution-based synthesis with surface functionalization strategies, the feasibility of colloidal ReS2 nanosheet films for sensing different gases is demonstrated with highly competitive performance in comparison with devices built with CVD-grown ReS2 and MoS2 . In addition, the integration of the ReS2 nanosheet films in assemblies together with carbon nanotubes allows to fabricate electrodes for electrocatalysis for H2 production in both acid and alkaline conditions. Results from proof-of-principle devices show an electrocatalytic overpotential competitive with devices based on ReS2 produced by CVD, and even with MoS2 , WS2 , and MoSe2 electrocatalysts. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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