Abstract: The present invention relates to organic or aqueous graphenium dispersions and composites, process for preparing the same, and uses thereof.

Abstract: The present invention relates to a nanographene-supported metal and/or metal oxide nanoparticle composite, and method for preparing same, and uses thereof. Specifically, the present invention relates to the uses of nanographene-supported metal and/or metal oxide nanoparticle composite as catalytic material, in electrocatalysis, as catalyst for gas-phase chemical reactions, as slurry catalyst for liquid-phase chemical reactions, for water purification and waste water treatment, in the treatment of cancerous tumors, and/or in Magnetic Resonance Imagery. The present invention finds applications in the industrial technical field, in particular in the material, chemical and pharmaceutical technical fields.

Abstract: A method for preparing aqueous or organic suspensions of fully exfoliated nanocarbon materials includes a) dissolving a nanocarbon intercalation compound in an aprotic organic solvent (A) or a mixture (A?) of aprotic organic solvents under inert atmosphere; b) re-oxidation to revert the reduced nanocarbon material to its neutral state; and c) mixing the organic suspension of neutral nanocarbon obtained in step b) with a suitable amount of degassed water, degassed ionic aqueous solution, degassed organic solvent (B), degassed mixture (B?) of organic solvents, or degassed mixture of (B) or (B?) with water or an aqueous ionic solution; wherein solvent (A) or solvent mixture (A?) is fully or partially water-miscible or fully or partially miscible with solvent (B) or solvent mixture (B?); thereby leading to an air-metastable aqueous or organic suspension of nanocarbon material.

Abstract: A method for preparing aqueous or organic suspensions of fully exfoliated nanocarbon materials includes a) dissolving a nanocarbon intercalation compound in an aprotic organic solvent (A) or a mixture (A?) of aprotic organic solvents under inert atmosphere; b) re-oxidation to revert the reduced nanocarbon material to its neutral state and c) mixing the organic suspension of neutral nanocarbon obtained in step b) with a suitable amount of degassed water, degassed ionic aqueous solution, degassed organic solvent (B), degassed mixture (B?) of organic solvents, or degassed mixture of (B) or (B?) with water or an aqueous ionic solution; wherein solvent (A) or solvent mixture (A?) is fully or partially water-miscible or fully or partially miscible with solvent (B) or solvent mixture (B?); thereby leading to an air-metastable aqueous or organic suspension of nanocarbon material.

Abstract: The invention relates to a method for preparing aerogels of individualized carbon nanotubes and to the applications thereof, in particular in the production of composite aerogels and electrochemical compounds. The method of the invention is characterized in that it comprises the following steps carried out in an inert atmosphere: (a) reducing the carbon nanotubes using an alkaline metal in order to obtain a polyelectrolyte salt of carbon nanotubes; (b) exposing said polyelectrolyte salt of carbon nanotubes to an aprotic polar solvent in order to obtain a solution of individualized, reduced carbon nanotubes; (c) freezing said solution of individualized nanotubes; and (d) sublimating the solvent. The invention particularly relates to aerogels of individualized carbon nanotubes obtained by said method, and to the uses of said aerogels.

Abstract: The present invention relates to a method of solubilizing graphite and applications thereof, including the manufacture of composites and the purification of graphene. The method of the invention is characterized in that it comprises the following steps carried out under inert atmosphere: a) reduction of graphite by an alkali metal to lead to a graphite intercalation compound; and b) exposure of the graphite intercalation compound to a polar aprotic solvent to lead to a reduced graphene solution. The present invention relates more particularly to graphene solutions and graphene planes obtained through said method, as well as uses of such graphene solutions and planes.

Abstract: Methods for solubilizing carbon nanohorns and applications thereof, including the manufacture of composites, hydrogen storage, catalyst supports and drug delivery. In certain embodiments, the method can include: a) Reduction of pristine carbon nanohorns by an alkali metal to lead to a carbon nanohorn alkali salt; and b) Exposure of said carbon nanohorn alkali salt to a polar aprotic solvent to lead to a solution of reduced carbon nanohorns. In certain other embodiments, solutions of carbon nanohorns, and individual carbon nanohorns are obtainable by the methods, as well as uses of such individual carbon nanohorns and solutions of carbon nanohorns.

Abstract: The present invention relates to a method of solubilizing graphite and applications thereof, including the manufacture of composites and the purification of graphene. The method of the invention is characterized in that it comprises the following steps carried out under inert atmosphere: a) reduction of graphite by an alkali metal to lead to a graphite intercalation compound; and b) exposure of the graphite intercalation compound to a polar aprotic solvent to lead to a reduced graphene solution. The present invention relates more particularly to graphene solutions and graphene planes obtained through said method, as well as uses of such graphene solutions and planes.

Abstract: The invention relates to a method for preparing aerogels of individualised carbon nanotubes and to the applications thereof, in particular in the production of composite aerogels and electrochemical compounds. The method of the invention is characterised in that it comprises the following steps carried out in an inert atmosphere: (a) reducing the carbon nanotubes using an alkaline metal in order to obtain a polyelectrolyte salt of carbon nanotubes; (b) exposing said polyelectrolyte salt of carbon nanotubes to an aprotic polar solvent in order to obtain a solution of individualised, reduced carbon nanotubes; (c) freezing said solution of individualised nanotubes; and (d) sublimating the solvent. The invention particularly relates to aerogels of individualised carbon nanotubes obtained by said method, and to the uses of said aerogels.

Abstract: The invention relates to a method for dissolving carbon nanotubes consisting in reducing the nanotubes in such a way that the nanotubes which are negatively charged with positive counter-ions are obtainable. The invention is used, in particular for preparing compounds or carbon nanotubes films.

Abstract: The invention concerns a method for obtaining fibers and strips from colloidal particles, characterized in that it consists in: 1) dispersing said particles in a solvent optionally using a surfactant; 2) injecting the resulting dispersion solution through at least an orifice emerging into a flow of an external solution, preferably, having a higher viscosity than said dispersion, the viscosity levels being measured in the same temperature and pressure conditions, so as to cause said particles to agglomerate into fibers or strips by destabilizing the particle dispersions and optionally aligning said particles.

Abstract: The invention relates to a method for dissolving carbon nanotubes consisting in reducing the nanotubes in such a way that the nanotubes which are negatively charged with positive counter-ions are obtainable.

Abstract: The invention concerns a method for obtaining fibres and strips from colloidal particles, characterised in that it consists in: 1) dispersing said particles in a solvent optionally using a surfactant; 2) injecting the resulting dispersion solution through at least an orifice emerging into a flow of an external solution, preferably, having a higher viscosity than said dispersion, the viscosity levels being measured in the same temperature and pressure conditions, so as to cause said particles to agglomerate into fibres or strips by destabilising the particle dispersions and optionally aligning said particles.