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AssigneeBreton SPA
InventorsVito Di Noto, Enrico Negro, Antoine Bach Delpeuch, Federico Bertasi, Gioele Pagot, Keti Vezzu'
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The invention refers to hierarchical nanocomposites including layered materials supported on suitable carriers. In a preferential aspect of the invention, the layered materials consist of graphene and related materials. In a preferential aspect of the invention, the carrier consists of nanoparticles characterized by a Mohs hardness higher than that of the layered materials included in the hierarchical nanocomposite. These materials, which consist of “core” nanoparticles (the carrier) wrapped by layered systems (the “shell”) such as graphene, graphene oxide and other graphene and related materials (GRMs), are suitable precursors to obtain inks with water. The hierarchical “core-shell” nanocomposites are obtained by a preparation procedure including at least one “in situ” mechanical exfoliation step of the layered materials. The mechanical exfoliation step is carried out owing to a reciprocal friction process between the components of the precursor mixture, that incorporates both the precursors of the layered materials and those of the supporting “core” carriers. The materials are suitable to prepare inks where “core” nanoparticles act as carriers for the single/few-layered supported graphene or GRM.
A process for manufacturing core-shell hierarchical nanocomposites consisting of core carrier nanoparticles wrapped by a shell of layered materials, said process which comprises subjecting a mixture consisting of one or more of the layered materials and carrier particles to a mechanical exfoliation step, wherein said mechanical exfoliation step comprises milling said mixture, and wherein said mechanical exfoliation step is carried out in a grinding system comprising a closed vessel and mobile grinding objects which are made of one or more of steel, agate, zirconia and tungsten carbide;
Dependencies are inferred from the claim text.