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Hydrothermal Unzipping of Multiwalled Carbon Nanotubes and Cutting of Graphene by Potassium Superoxide.
Koutsioukis, Apostolos; Spyrou, Konstantinos; Chalmpes, Nikolaos; Gournis, Dimitrios; Georgakilas, Vasilios.
Afiliación
  • Koutsioukis A; Department of Materials Science, University of Patras, 26504 Rio, Greece.
  • Spyrou K; Department of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, Greece.
  • Chalmpes N; Department of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, Greece.
  • Gournis D; Department of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, Greece.
  • Georgakilas V; Department of Materials Science, University of Patras, 26504 Rio, Greece.
Nanomaterials (Basel) ; 12(3)2022 Jan 28.
Article en En | MEDLINE | ID: mdl-35159792
The dual use of potassium superoxide (KO2) to unzip multiwalled carbon nanotubes (MWCNTs) and cut graphene under hydrothermal conditions is described in this work. The KO2-assisted hydrothermal treatment was proven to be a high-yield method for forming graphene nanoribbons and dots or sub-micro-sized graphene nanosheets. Starting with functionalized MWCNTs, the method produces water-dispersible graphene nanoribbons with characteristic photoluminescence depending on their width. Using pristine graphene, the hydrothermal treatment with KO2 produces nanosized graphene sheets and graphene quantum dots with diameters of less than 10 nm. The latter showed a bright white photoluminescence. The effective hydrothermal unzipping of MWNTs and the cutting of large graphene nanosheets is a valuable top-down approach for the preparation of graphene nanoribbons and small nanographenes. Both products with limited dimensions have interesting applications in nanoelectronics and bionanotechnology.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2022 Tipo del documento: Article País de afiliación: Grecia Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2022 Tipo del documento: Article País de afiliación: Grecia Pais de publicación: Suiza